What was the cause of the brief recession in the United States in 1918 and 1919? the flood of refugees from war-torn Europe a cut in income taxes a decrease in the labor pool the change from wartime to peacetime production

Which scenario best illustrates the principle of popular sovereignty?

In italy, the distance between milan in the north and palermo,sicily, in the south is about 550 miles. in the united states, the distance betweenboston, massachusetts, and savannah, georgia, is about 900 miles. do you think the american revolutionaries of 1776 in the 13 colonies faced some of the same challenges as the patriots who struggled for italian unity in the 1860s?  

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