Hello there!
The Siege of Damascus lasted from July 23 - 28, 1148. It was a bloody fight, and nearly 30,000 we're killed. It was during the time the Muslims we're trying to take over the Syrian country. There we're 2 crusades.
I know this isn't much, but I hope it helps! :)
The important contribution to navigation made by Eratosthenes in the third-century bc was a reasonably accurate calculation of the circumference of our planet.
Who is Eratosthenes?
Eratosthenes was born in 276 BC and died in 194 BC. He was a well-known poet, mathematician, a researcher in geography, and theorist of music. He was the first to gauge the size of the planet.
The Earth was first measured by Eratosthenes of Cyrene. The precise measurement of Earth's circumference was greatly aided by Eratosthenes' work in the third-century bc.
As a result, the Eratosthenes in the third century bc accurate calculation of the Earth.
Learn more about Eratosthenes, here:
brainly.com/question/1995686
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This is a very complex question, but they both collapsed due to:
decentralization and government corruption
plagues/ epidemics
high taxes
and invasions
Some differences are that the Chinese empires saw a revival while Rome didn't.
Please give me brainliest!!
C: Basically to ship goods.
