Explanation: It was one of the largest cities of the ancient Indus Valley Civilization, also known as the Harappan Civilization, which developed around 3,000 BCE from the prehistoric Indus culture. ... Mohenjo-daro was the most advanced city of its time, with remarkably sophisticated civil engineering and urban planning.
I think it’s D but if not it’s B
Answer: C
Explanation: Dred Scott (c. 1799 – September 17, 1858) was an enslaved African American man in the United States who unsuccessfully sued for his freedom and that of his wife and their two daughters in the Dred Scott v. Sandford case of 1857, popularly known as the "Dred Scott case". Scott claimed that he and his wife should be granted their freedom because they had lived in Illinois and the Wisconsin Territory for four years.
First, they made settlement of the West possible after the Civil War by connecting farmers (and miners, ranchers, loggers, and others) to markets.
Second, railroads helped to integrate different regions of the country economically.
