The statement that BEST describes changes made during the period after the French and Indian War and before the American Revolution is:
B To make more manageable colonies, Spanish Florida was divided into British West Florida and British East Florida.
This reflects the administrative changes the British made in North America following their acquisition of territories from France after the war, specifically the reorganization and division of Florida into two separate colonies to facilitate governance. The other options do not accurately represent the historical context or agreements of that period.