Which accurately describes a letter written during the time a historical event occurred?

A letter written during the time a historical event occurred would be considered a primary source, as opposed to secondary source, since it gives the point of view of someone who lived through the event in. I think

in february 1787, congress decided that a convention should be convened to revise the articles of confederation, the nation’s first constitution. in may, 55 delegates came to philadelphia, and the constitutional convention began. debates erupted over representation in congress, over slavery, and over the new executive branch. the debates continued through four hot and muggy months. but eventually the delegates reached compromises, and on september 17, they produced the u.s. constitution, replacing the articles with the governing document that has functioned effectively for more than 200 years.

hey.

the answer is. b) to protect migrating native american tribes .

and, c) to protect migrating native american tribes .

hope this , if it does, consider marking me brainiest! uwu