"When the legislative and executive powers are united in the same person or in the same body of magistrates, there can be no liberty." –Charles de Montesquieu Which theory does this quote support?

What were three advantages the north had in the civil war? it was fighting most battles on home ground. it had a greater number of soldiers. it had more highly skilled military leaders. it had a stronger navy. it had a better network of railroads. pick three .