The answer is B. The history of the Madeira and Canary Islands.
Answer:
The Battle of the Philippine Sea
The Battle of the Philippine Sea (June 19–20, 1944) was a major naval battle of World War II that eliminated the Imperial Japanese Navy's ability to conduct large-scale carrier actions. It took place during the United States' amphibious invasion of the Mariana Islands during the Pacific War
Answer:
Melting pot theory.
If you need an explanation, don't be afraid to ask! I hope this helped, and if you have any more, go ahead and PM me.
Young and able men who wanted to serve in the war