Climate change that caused a severe drought.It is also theorized that the Hittite's cities were destroyed by earthquakes.
They lived among the Hidatsa and Mandan Indians in the upper Missouri River area (present-day North Dakota). In November 1804, an expedition led by Meriwether Lewis and William Clark entered the area. ... Lewis and Clark met Charbonneau and quickly hired him to serve as interpreter on their expedition.
B this is an obvious answer
Designating additional land as national parks
The choice to enable the general population of Kansas to vote whether their new state would be slave or free.
This meagerly populated domain pulled in all way of cross-fringe looters from the two sides of the verbal confrontation, resolved to threaten voters and get the outcomes pronounced invalid.
There was horrible slaughter, and demonstrate couldn't help suspecting that the bondage level headed discussion could never be settled, with the exception of through battle. The slave-question that caused the new Compromise of 1850 was the confirmation of California as free soil.
