Answer:
A. the assembly line
Explanation:
The assembly line was an invention by Henry Ford that aimed to reduce the time that a certain product, in this case a car was produced, this increased the productivity of his company and increased the profit, the assembly line is basically a moving line were different workers did a repetitive task for long periods of time, putting thousands of bolts a day while other tightens them, and other worker puts the tires, or another part of the car.
The Sand Creek<span> Massacre summary: On November 29, </span>1864<span>, seven hundred members of the </span>Colorado<span> Territory militia embarked on an attack of Cheyenne and Arapaho Indian villages. The militia was led by U.S. Army Col. John Chivington, a Methodist preacher, as well as a freemason. Hope this helps! :)
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Asian trade was conducted by several indigenous Traders such as Arabs,Presians and Chinese