<span>Britain had developed radar stations to detect German aircraft</span>
Answer:
The Lousiana Purchase
Explanation:
They were able to expand westward when Thomas Jefferson purchased Louisiana. This became of bad effect because the Missouri Compromise didn't involve the westward expansion. The Missouri Compromise was writing that tried to outlaw slavery, but sense it didnt evolve around Louisiana, the people there could continue with slavery. This was why expanding had bad effects.
One of the main reasons why this occurred was because demand for furs increased dramatically in Europe, due to their value that could be used to buy spices and other goods.
For most freedmen in the South after the Civil War ended life was unfortunately not much different than it had been before (at least economically) since many of these men were denied social and economic rights, and were tied to the land of farm owners.