WOW!? That's a lot of questions....:(
Answer:
The Civil War confirmed the single political entity of the United States, led to freedom for more than four million enslaved Americans, established a more powerful and centralized federal government, and laid the foundation for America's emergence as a world power in the 20th century.
Explanation:
I don’t know if this is right but I am guessing Britain and France
The correct answer is C. The cost of shipping goods from the Midwest decreased.
Explanation:
The Erie Canal was a man-made construction that connected New York state and territories in the Midwest including those near the Great Lakes. This canal was created at the beginning of the 19th century and helped the economy of the United States because it facilitated the transportation of goods between different territories. This implied products from the Midwest could be transported to the states in the east and this decreased the costs for shipping goods from the zones in the midwest. Moreover, the trade between the states involved increased. According to this, the correct answer is C.