Answer:
The Columbian exchange, also known as the Columbian interchange, named after Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries.
True because. People might use things to make stuff.
Martin Luther King Jr was a leader of a civil rights movements that wanted equality and freedom be granted to all races equally.
He is best known for holding PEACEFUL protests
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It led to the fall of the Qing government.
Railroad tycoons were the early industrial pioneers amassing or overseeing construction of many large railroads through the early 20th century. The names of the leaders are, James Hill, Jay and George Gould, Cornelius Vanderbilt, Edward Harriman, and Collis P. Cornelius Vanderbilt was a famous industrialist who worked in railroads and shipping.
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