Answer:
Earlier soliders were experenced horse riders and warriors who believed they had a religious duty to spread Ilsam.
Explanation:
The correct answer is President Franklin D. Roosevelt.
Roosevelt started the Manhattan Project after receiving a letter from Albert Einstein which warmed him of the advancements made by German scientists during World War II. After hearing about these concerns, FDR wanted to ensure that the US would be ahead of Germany in terms of the development of the atomic bomb. Roosevelt knew that if Germany beat the US to this development, it could be extremely dangerous for the entire world.
There are many ways for this to happen. The president can make bills. This isn't always effective as they can be rejected by congress. The president can also wage war. He has to be careful when doing this as it could backfire on him.