Why was the emancipation of the slaves necessary for the survival of american self-government?

Space is not completely empty. there are small particles in space. what happens when these particles come together?

What was the most significant result of the opium wars? a. china’s navy was exposed as incompetent. b. china could no longer impose tariffs. c. they increased britain’s influence in china. d. they decreased europe’s influence in china.

The event shown in the map is a cause of which of the following? *pic*gadsden purchase battle of the alamo bear flag revolt settlement of texas