Answer:
I think it's A, sorry if I'm wrong.
Explanation:
During World War II, Marshall was instrumental in preparing the U.S. Army and Army Air Forces for the invasion of the European continent. Marshall wrote the document that would become the central strategy for all Allied operations in Europe.
I believe the answer is Transportation Innovations
The cattle boom led to economic prosperity for the rise, growth, and development of new towns in the west resulting to the development of service businesses, for example, hotels, salons, e.t.c. The cattle were bought cheap and resold at high prices which allowed the ranchers to make a lot of money (profit).
The one provision that the immigration reform and control act of 1986 was to impose punishment to those employers who hire and accept illegal immigrants to work with them. This is also to check any unauthorized immigrants that enter the country. Hope this helps.