Black resistance against slavery. Between 9 and 11 million enslaved Africans were bought by European traders from Africa between 1450 and 1870. They were taken across the Atlantic Ocean to work on the European-owned plantations and mines of the Americas. Hence the name the transatlantic slave trade.
How many earthquakes does Alaska have each year? Alaska has 11% of the world's earthquakes, and 3 of the 6 largest in recorded history were located there. Since 1900, Alaska has had 1 magnitude 7 or 8 earthquakes per year, 45 earthquakes of magnitude 6 or 7, and 10,000 quakes overall annually. The most famous earthquake, of course, was the 1964 Great Alaska Earthquake centered near Prince William Sound. With a magnitude 9.2 over 4.5 minutes, this devastating temblor and resulting tsunami took the lives of 100 people and turned the city of Anchorage into a disaster area.
However, the majority of earthquakes in Alaska occur along the Alaska-Aleutian Megathrust, the large fault zone where the North American plate is forced over the Pacific Plate. At this boundary (along southern Alaska, the Alaska Peninsula, and the Aleutian Islands), the Pacific plate subducts, or slides, beneath the North American plate at a rate of five to seven centimeters per year.