Answer:
D (Brazil)
Explanation:
According to the key, the country filled in with the darkest color has the highest level of carbon dioxide.
According to the question, "increased levels of carbon dioxide are the result of an industrial economy".
Brazil has the darkest fill in color and therefore is the most industrialized.
The correct answer is - Americans moved west in the 1800's because people wanted to get a fresh start and wanted to be able to buy their own land, as well as to try new economic possibilities, such as farming and gold mining.
In the 1800's the situation in the west started to stabilize and be much more attractive for people to move in. The problems with the native American populations were almost totally put under control so the safety issue was mostly resolved. Also the government had policies to give free land or for very small amount of money as to attract people to move there and thus have the demographic basis for implementing their rule more efficiently. For lots of people, mostly the ones from the lower class, this was seen as a golden opportunity and they used it as quick as possible.
A mineral is a chemical substance and a rock is not
