Answer:
Correct Answer: the removal of federal troops from the South.
Step-by-step explanation:
In 1876, a United States elction conducted ended up in dispute due to the fact that a clear cut winner was not achieved. In order to settle this issue, an unwritten and informal deal was reached among the Congress men.
This deal shows that, if the Democrats accepts Republican Party candidate, Rutherford Hayes, to become the next president, then, the Republicans would withdraw federal troops from the South.
It would enable the Democrats to regain political power in the southern state governments. This deal was succesfully implemented leading to Rutherford Hayes becoming the President.