In the early 1800 american indians were not allowed to live in the great plains because

Conditions on the Great Plains were harsh. Temperatures were extreme with freezing cold winters and incredibly hot summers. Lighting flashes could cause the grass to set alight, causing huge grassfires that spread across the Plains. The land was dry and unproductive making it difficult to grow crops.

Explanation:

it further strained relations between the north and the south and convinced

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.