Answer:
Explanation:
Following the 19th century, 20th-century events changed the world in unprecedented ways. The World Wars sparked tension between countries and led to the creation of atomic bombs, the Cold War led to the Space Race and creation of rockets, and the World Wide Web was created.
The United States government set out to establish a series of Indian treaties that would force the Indians to give up their lands and move further west onto reservations. ... Once gold was found in the Black Hills, miners were soon moving into the Sioux hunting grounds and demanding protection from the United States Army. hope this helps
1850-1900 because at the start of the 1900 is the industrial revolution
