What was the seven year war and how did it affect florida?

The seven year war was a global conflict between 1756 and 1763.

Explanation:

On one side was France, Austria, Saxony, Sweden, and Russia and on the other side of Prussia, Hanover, and Great Britain. The war began with an attempt  of Austria to get the province of Silesia back that had been taken by Prussia. This war also included the struggle between Great Britain and France for the control of North America and India.

At the end of this war, a Treaty was signed in which Great Britain got control of Florida back  from Spain and it was divided in two: East Florida and West Florida.

the answer would be b).