A long drought is what I believe the answer is
Solve for one of the variables first ,, then whatever answer you receive from x or y , you then begin to plug it in to get other variable.
During the ensuing decades, the abolitionist movement grew in Northern states, and Congress regulated the expansion of slavery as new states were admitted to the Union. Britain banned the importation of African slaves in its colonies in 1807 and abolished slavery in the British Empire in 1833.
