answer c for 15 and answer b for 16
Answer:
The Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance
Explanation:
There was six articles and the terms lasted 30 years in force.
Considering the passage above the completed one is this:
After the passage of the Homestead Act, settlers flooded to the Great Plains, where lumber was scarce. Barbed wire enables the settlers to fence in their lands.
As a result, the movement of Native Americans and cattle drivers was severely restricted, and the era of open range came to an end.
Hence, in this case, the correct answers are:
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The siege of Vicksburg in 1863.
Hope this helps! Xo