How could the USA’s westward expansion cause an intense debate over slavery?

Robert morris proposed a 10 percent tax on imported goods to pay the national debt. true or false

Which statement about submarine use in world war i is true? the allies never found a way to counter german submarine warfare. germany’s use of submarines affected the united states’ decision to enter the war. only the germans used submarines in world war i.

¿por qué gran bretaña y francia trataron de evitar que estados unidos le vendiera productos al enemigo?