The answer is B (Socialist).
It would not be Private Entrepreneurs and Capitalist since they support private control of production. Socialism on the other hand believes that production should be controlled by the workers themselves.
The one that was a factor in the U.S entry in world war I was :
B. the sinking of the Lusitania
D because the cause for terrorism is none of the above
The Congressional Budget and Impoundment Control Act actually strengthen the system of checks and balances between the legislative and executive branches. In effect, part of the complete title of the Act states itself : "...to establish a procedure providing congressional control over the impoundment of funds by the executive branch..."
It became popular because of its texture and luster discovered by the empress)