What was the "corrupt bargain" between henry clay and john quincy adams?

To the surprise of many, the House elected John Quincy Adams over rival Andrew Jackson. It was widely believed that Clay, the Speaker of the House at the time, convinced Congress to elect Adams, who then made Clay his Secretary of State. Jackson's supporters denounced this as a "corrupt bargain."

Explanation:

urbanities in the northeast and midwest lost political power.

i believe the answer is a