Answer:
A. trianglur trade
Explanation:
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The Founders made the amendment process difficult because they wanted to lock in the political deals that made ratification of the Constitution possible. Moreover, they recognized that, for a government to function well, the ground rules should be stable.
A primary source is a person (or a record produced by a person) who was actually there, as a witness or a participant of the event in question. A secondary source is someone who obtained information from a primary source and who then wrote or spoke about it.
Religious militancy exists in every type of religion. Almost always, those who practice this kind of radical militancy in the name of a particular religion represent only a small fraction of that religion's followers.
As far I know a u.s. citizens has the right to vote, be able to travel with a U.S. passport, be able to apply for a federal government jobs and to petition for a close relative to come live in the U.S and all of these stuff cannot do an alien resident.