Explain ONE way in which ethnic divisions affected the development of land-based empires in the period 1450–1750.

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

On a supply and demand graph, equilibrium is the point where the two curves meet. the supply curve begins. the supply curve ends. the demand curve ends.

Predict how the transcontinental railroad will make a difference in the civil war. now, research the inventions of the 19th century. tell what other inventions of the 19th century will change the way people see and remember the war? why?