A presidential system, or single executive system, is a form of government in which a head of government (president) leads an executive branch that is separate from the legislative branch. This head of government is in most cases also the head of state.
Answer:
Robert cannot enforce Alfreds oral promise
Explanation:
Because there will be no evidence to support his claims.
And also there were no witnesses so it will be their words against each other in which there will be no base for a case.
Answer:
C. Increased knowledge of the world.
Explanation:
The rest of the options aren't beneficial.
1st one because that would be domestic not foreign