It was to prevent slavery in new the lands gained from the Mexican War.
The main cause was the Stock Market Crash of 1929.
Reign of terror............................................................................i believe
It is C "It was built as the entrance to the Industrial Exploration of 1886
<span>Administrative decisions that are related to all issues and activity within a nation's borders. It differs from foreign </span>policy<span>, which refers to the ways a government advances its interests in world politics.</span>
