Did black codes limit or guarantee civil rights

What new concept did the the american revolution introduce into the world

Atreaty was signed in 1842 to end the border dispute between the u.s. and britain in maine. which best expresses the end result for britain? *pic* the british lost all the territory in maine the british territory was bigger than that of the u.s. the british territory was smaller than that of the u.s. the british territory was the same size as the u.s. territory

Of the following, who would be the least affected by the telegraph? eastern industrialists western businessmen city dwellers native americans