He studied the fossils' age and how tall the mountains are. He also studied how old they are. I don't know about Coal Beds but he also used balloons to find out the continents were once a big supercontinent called Pangaea and they apparantly drifted apart
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crops grown along the ocean shore thrived more than crops along the river
Answer: 10 million Africans had been sold by the 1800s, about into slavery in the Americas.
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The Latin American Wars of Independence were the revolutions that took place during the late 18th and early 19th centuries and resulted in the creation of a number of independent countries in Latin America. These revolutions followed the American and French Revolutions, which had profound effects on the Spanish, Portuguese, and French colonies in the Americas. Haiti, a French slave colony, was the first to follow the United States to independence during the Haitian Revolution, which lasted from 1791 to 1804. From this Napoleon Bonaparte emerged as French ruler, whose armies set out to conquer Europe, including Spain and Portugal, in 1808.
