Library/Warbirth

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Overview Rise of Kings tech tree Bronze Dawn tech tree

As in Rise of Nations, the Library is the nucleus of your scientific research (or what passes for it) in Rise of Kings: Warbirth.

There are five paths of research in the Civic Centre: Science Science.jpg, Commerce Commerce.jpg, Administration Civic.jpg, and Military Military.jpg, as well as three trunk technologies. Each one of them is a prerequisite for further research, which in turn might contribute towards bettering your units and even the stylistic appearance of your faction's buildings!

Ages

"[T]hey pass away in the rustling blast, and other leaves lift their green heads on high." —James Scott MacPhearson, Ossian

Ages allow your faction to grow and mature as a civilisation, and are required to access Reforms and Research which enhance your faction vis-à-vis others. Each age is costlier and harder to research than the next, but great are the rewards should you chooise to pursue them.


RESEARCH LEVEL NAME GRANTS ACCESS TO COST


1
Trunk 2x.jpg

Bronze
Age

"And thy heaven that is over thy head shall be brass." —Deuteronomy (28:32)

  • Basic tech level
  • Axe infantry can be researched.
  • Note that the Arabs can recruit camels off the bat, giving them somewhat of an advantage.

None—
basic level

2
Age1 bronze.png

Heroic Age

"Who is most glorious of the heroes, who is most eminent among men?"Epic of Gilgamesh

  • Prereq: Up to 10 non-Trunk technologies
  • Low-level technologies and units, including roundships and elite axe and spear infantry, as well as heavy chariots.
  • Horse skirmishers appear.

Resource cost:

  • 500Krateia.png
  • 500Food.jpg

3
Trunk 4x.jpg

Axial
Age

"A deep breath bringing the most lucid consciousness."

—Karl Jaspers, German theologian
  • Prereq:
    • Heroic Age AND
    • Up to 20 non-Trunk technologies
  • Advanced tech level and units, full roster reached.

Resource cost:

  • 1,000Krateia.png,
  • 1,000Food.jpg

Scientific research

If you search for the laws of harmony, you will find knowledge. —Egyptian saying

Science research increases line of sight for many of your units (including buildings), makes new Resource technologies available so you can increase gather rate, permits construction of new types of buildings, and decreases the cost of all other technology research incrementally.

RESEARCH LEVEL NAME GRANTS ACCESS TO COST UNLOCKS

1
Written Word

Written
Word

"All that I have written seems like straw."

— Thomas Aquinas, Christian theologian and mystic, to Reginald of Piperno
  • Transport of land units by sea
  • Research cost cheaper and research speed improved by 10%
  • Increased LOS

Resource cost:

  • 120Timber.jpg
  • 50Wealth.jpg

2
Loremastery

Loremastery

All words hold a seed of truth, from their very syllables all the way to the mood of the speaker.

  • Research cost cheaper and research speed improved by 10%
  • Increased LOS

3
Cosmology

Cosmology

"Let us meditate on the effulgent glory of the radiant Sun."

Gayatri Mantra
  • Research cost cheaper and research speed improved by 10%

4
Numeracy

Numeracy

Not everything that counts can be counted.

  • Research cost cheaper and research speed improved by 10%
  • Increased LOS.

5
Formal Education

Formal
Education

He who goes unpunished never learns. —Greek Proverb

  • Research cost cheaper and research speed improved by 10%
  • Increased LOS

Pedagogics with Heroic Age

6
Deductive Reasoning

Deductive
Reasoning

To know one's true self is to know one's world.

  • Low-level knowledge upgrades for University
  • Granary
  • Sawmill.
  • Research cost cheaper and research speed improved by 10%
  • Increased LOS

7
Logic

Logic

Reason has an innate beauty of its own.

  • Foundry
  • Low-level crops and lumber upgrades in Granary and Sawmill.
  • Research cost cheaper and research speed improved by 10%
  • Increased LOS
  • 1,500Krateia.png
  • 1,500Wealth.jpg

Commerce research

...where the houses overflow with the greatest troves of treasure... —The Iliad

Commerce research will cost you Timber and Knowledge at the Library. When you complete Commerce research, your Commerce Cap goes up for all Resources you gather: Food, Timber, Metal, and Wealth. You can gather more of them only up to the Commerce Cap; surpass the cap and any excess is simply lost to you. Commerce research along with Civics research is also required to gain access to a variety of military units as well.

RESEARCH LEVEL NAME GRANTS ACCESS TO COST UNLOCKS

1
Exploration

Exploration

To know one's world is to know one's true self.

  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources
  • 60Timber
  • 60Food
  • Market.png
  • Dock

2
Commodity Money

Commodity Money

"If more of us valued food and cheer and song above hoarded gold, it would be a merrier world."

—John Ronald Reuel Tolkien, The Hobbit
  • Allows for resource trading at Market.
  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources.
  • Carpentry Woodworking

3
Records and Tallies

Records and Tallies

Bean counting is especially valuable in a world of feast and famine.

  • Trade with allies and peaceful factions
  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources

4
Warehousing

Warehousing

Who possesses much silver may be happy; who possesses much barley may be glad; but he who has nothing at all may sleep. —Sumerian saying

  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources.

5
Land Development

Land
Development

You should not make a well in your field: people will cause damage on it for you. You should not place your house next to a public square: there is always a crowd there.Instructions of Shuruppak

  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources

6
Contractual Relations

Contractual Relations

Guard your promises well, lest you be compelled to break them later.

  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources

7
Entrepot Trade

Entrepot Trade

"He shall be for an haven of ships; and his border shall be unto Sidon." —Genesis (49:13)

  • Increased Caravan limit Caravan limit
  • Increased commerce cap for all resources.
  • 1,800Krateia.png
  • 1,200t

Administration research

To bring about the rule of righteousness in the land, so that the strong should not harm the weak.
—Hammurabi's Code; Prologue

Administration research allows you to build one new city with each completed round, and increases your national borders. If your borders abut other nations' borders, then you'll gain strength in the pushing match. As long as you don't touch other factions' territories yet, the diameter of area covered by your borders centred around your Cities simply expands with each level attained.

RESEARCH LEVEL NAME GRANTS ACCESS TO COST UNLOCKS

1
Culture

Culture

Beauty is all in the eye of the beholder.

  • Low-level religious and taxation research at Temple.
  • Increased City Limit city limit.
  • Increased borders
120Food.jpg
  • House of Worship

2
Caste System

Caste
System

"The existence of this world is effected by the observance of the rules respecting the four classes of men and their four stages of life"

— Vatsayana, Kama-Sutra (Cap II)
  • Low-level attrition research at Tower.
  • Increased City Limit city limit.
  • Increased borders
160Food.jpg
  • Tithes Taxation
  • National Cult

3
Alienable Rights

Alienable
Rights

He who exercises his own right injures no one.

  • 160Krateia.png
  • 160Food.jpg

4
Codified Law

Codified
Law

The more laws and restrictions there are, the poorer people become. —Taoist saying

  • Medium-level attrition research at Tower.
  • Increased City Limit city limit.
  • Increased borders
  • 300Krateia.png
  • 300Food.jpg
  • Writs and Decrees Taxation

5
Nationhood

Nationhood

"United we stand; divided we fall." —Aesop

  • High-level taxation research at Temple
  • High-level atrition research at Tower
  • Increased City Limit city limit.
  • Increased borders.
  • 500Krateia.png
  • 500Food.jpg
Theocracy

6
Ambassadors

Ambassadors

A mask he still could wear so that if he wished he might deceive the eyes of Men, seeming to them wise and fair. —John Ronald Reuel Tolkien, The Silmarillion

  • Research cost cheaper and research speed improved by 10%
  • Increased LOS.
  • Medium-level religious research at Temple.
  • Increased City Limit city limit.
  • Increased borders
  • 1,000Krateia.png
  • 800Food.jpg

7
Expansionism

Colonial System

"The sun shall shine on no land that is not our own."

—Herodotus, classical Greek author, The Persian Wars
  • High-level religious research at Temple
  • Increased City Limit city limit.
  • Increased borders.
  • 1,500Krateia.png
  • 1,500Food.jpg

Military research

"Thou leadest as a warrior king thine army's wings what time thou comest in the van of these swift streams."
Rig-Veda (m. 10, hymn LXXV)

Completing Military research increases your population cap and also allows you to start upgrading your units at your military structures. Additionally, the cost of units and unit upgrades is lowered with each successive level researched.

RESEARCH LEVEL NAME GRANTS ACCESS TO COST UNLOCKS

1
Drill

Drill

"The mark of their arm is in a thousand battles." —James Scott MacPhearson, Ossian

  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
120Food.jpg

2
Tribal Levy

Tribal
Levy

"Range the men by tribes, by clans, Agamemnon, that clan may bear aid to clan and tribe to tribe."

—The Iliad (Cap II)
  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 100Food.jpg
  • 100Ore.png
  • Barracks

3
Military Tradition

Military
Tradition

The good man wins a victory and then stops.

—Taoist saying
  • Unlocks cavalry units: chariots and horsemen
  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 200Ore.png
  • 160Krateia.png
4
Soldiery
Soldiery

Train soldiers for a thousand days to use them for a day.

— Chinese saying
  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 360Krateia.png
  • 250Ore.png
  • Siege Workshop

5
Hierarchy and Command

Hierarchy
and
Command

Be one in self-harmony, in Yoga, and arise, great warrior, arise.Bhagavad-Gita (Cap 4, v XLII)

  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 650Krateia.png
  • 400Ore.png

6
Hereditary Service

Hereditary
Service

"Kings will always use their kingly weapons. To use force is bred in them." —Gandhi

  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 1,300Krateia.png
  • 500Ore.png

7
The Art of War

The Art
of War

[War] is a subject of inquiry which on no account can be neglected.

—Sun Zi, Chinese military strategist
  • Increased Population.jpg Population Cap
  • -5% production cost for units of previous ages per level ahead
  • -10% upgrade cost for units of previous ages per level ahead
  • 1,800Krateia.png
  • 1,200Ore.png