A is the purpose of works cited
b is the purpose of body paragraphs
c is the purpose of the conclusion
d is the purpose of the introduction
so b.
A lot of things are necessary to make sure your work won't be seen as plagiarism. For example it is useful to keep research notes that show your work flow. If you do use other sources, make sure to cite them and especially If you quote them make sure you use citation marks and give the source.
Three of the mentioned events happened in the last (20th) centuty: Nafta went into effect in1994, Panama regained control over the Canal in 1970s and Fidel Castro was is still alive.
The event that came first was the following one: <span>(2) Simón Bolívar established Gran Colombia.
It happened in the 19th century. </span>
I think its the executive. But it may be all of them because they balance each other out, no one is higher or lower
Cloture affects a filibuster by actually stopping a filibuster in the middle of it.