Which sentence is true about the early settlers in the Americas?

Which sentence is true about the early settlers in the Americas? a.  they were technologically advanced than other civilizations. b.  they benefited economically from long distance trade. c.  they crossed the Bering strait from Siberia to enter the Americas. d.  they migrated to Asia and Africa after crossing in to the Americas.

The answer would be D

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.

because the vietnam war was fought in an especially brutal and untraditional way