What factor explained florida’s six-year wait to have its request for statehood approved?

Florida took time in becoming a state because it faced the same dilemma as Missouri as it entered the Union.  They had to wait for a certain period of time to ensure that the balance between Free State and slave remains intact.  They became a state when Iowa was admitted into the Union which was a free state thereby maintaining the balance.

hold on ill go look

the answer is d. give brainliest if right.

ps is this 7th grade civics?