I would say that Christopher Columbus was influenced by the travels of Marco Polo.
He was greatly inspired by his travels and wanted to become as famous as Polo was as an explorer, and eventually, he did follow in his footsteps. Polo's travels changed the European perception of the Asian world, and as you know, Columbus also wanted to go to Asia, but he ended up in America.
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I would focus on how one of the empires lasted for nearly 2 millennia (if you count Byzantium as Rome), and how the other fell apart very soon after the empire’s namesake “Alexander” perished.
Explanation:
I hope this helps with your work you’re welcome
Answer: Chemical weathering changes the chemical makeup of rocks, transforming their minerals or combining them with new elements. Many caves have been formed from this. This is the wearing away of the earth's surface by wind, glaciers, and moving water.