A
Civilization advance.
During
World War II, military researchers found a way to turn an
ancient Chinese curiosity into a practical long-range
weapon. Rocketry is the
development of
projectiles propelled by the
ejection of gases heated (and often generated) by the
combustion of on-board
fuel. With the realization that
Newton's Second Law of Motion applied even in a
vacuum, nations began using rockets to propel
spacecraft and weapons with global
range.
Prerequisites: Advanced Flight and
Electronics.
Allows for: Space Flight
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