The sioux indian attacks on stagecoach lines.
<span>The causes of the Sand Creek massacre
were rooted in the long conflict for control of the Great Plains of
eastern Colorado. The Fort Laramie Treaty of 1851 guaranteed ownership
of the area north of the Arkansas River to the Nebraska border to the
Cheyenne and Arapahoe -that part was sighted off history.com- </span>
Fighting began between proslavery and antislavery forces
18. False
19. 1, and 3,
I hope this helps! :)
An important difference between the freedom rides and unauthorized marches were Freedom rides were testing whether an existing law would be upheld, while unauthorized marches were intentionally breaking an unjust law. The correct answer is C.