Answer:
B
Explanation:
There was a conflict between proslavery and antislavery groups in Kansas between 1854 and 1861
If i had to choose between B and D, id have to say D, correct me If i'm wrong
Their marriage united Spain.
The Europeans were most of the time not very nice people and wanted to completely control and take over rather than build relationships with the Indians, In other cases Indians helped the French against Great Britain Which therefor causes the Indians and Great Britain to not get along.