1800s, which country faced the greatest challenge remaining unified with a large variety of ethnic groups seeking independence within its borders?

What is significant about the power that russian federal cities are granted?

Plz the 10 places that charles darwin stopped at to report his findings, and include dates?

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