It was primarily "a. Baron de Montesquieu" who James Madison borrowed the idea of separation of powers from, since this idea was one of Montesquieu's main ways of ensuring that tyrannical governments did not form.
The two parties signed the Hay–Bunau-Varilla Treaty. It gave the United States a ten-mile strip of land, all the rights to construct and administer a canal, and the right to protect the canal. In return, the Panamanians received $10 million and an annual rent of $250,000.
so the closest thing you have is C.
They became a democracy in the 50th centery
A secondary source could be someone that maybe discovered the body or is doing evaluations to see why or how he died, like a doctor for instance it would be a secondary source because............the doctor was not there and he did not watch so....and if he wrote about it then that would be a secondary source! :) <3 hope this helps!