The answer is: The sea
Back then, the techology that exist to travel by sea was not as developed as it is today. If an empire decided to travel through the sea in order to do some conquests, that empire will risk several things, such as:
- Loss in directions
- The ships could be swallowed by harsh wheather in the middle of the sea
- It need a lot of resources to maintain the armies during the travel
C) Heinrich "discovered" the ancient city of Troy in 1870.
Because they started to accuse people who were not obviously Communists.
Carter wanted to drop the atomic bomb on China when North Korea tried taking over the south of Korea. The u.S got involved in the war and pushed North Korea all the way to China
Farming, making a living, slavery, religion, i don't know if this is exactly what you're looking for but heres a rough idea.
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