How did african americans streagthen the republican party in the south?

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

to keep us neatruel and not get involved in any wars

he assumed control of treaty negotiations with a hostile power