By 1820, most american indians east of the mississippi river
a-were living side by side with settlers in peace.
b-had moved east to the atlantic coast.
c-had been defeated by the us military.
d-had won most battles against the us military.

The correct answer is option A-"were living side by side with settlers in peace".

Explanation:

There were "Five Civilized Tribes" living east of the Mississippi River: the Chickasaw, Choctaw, Creek, Seminole, and Cherokee. By 1820, most of these American Indians were living side by side with settlers in peace. This changed when Andrew Jackson took the presidency in 1829 and implemented an Indian Removal policy. By 1830, US military started the Indian Removal in the east of the Mississippi River.

d) a week

because the land run of 1889, although not without precedent in the history of the west, further, their men were aboard the first trains, ready to jump off and begin staking their claims. oklahoma city, edmond, and guthrie were all so affected.

the spanish  

hope this meaning spain btw