D.federal troops at Central High school on Little Rock
Answer: The answer is A
Explanation: This is because a lot of people wanted to vist the and explore new lands to add to their politcal power.
A. it allowed them to silence their political opponents
You're answer would be "<span>widespread slavery"
Hope this helps. c:</span>
<span>The Indus Valley had many values such as the crops and cattle that they raised. They had a lot of clay which they exported to nearby civilizations and cities.</span>