One reason is that Britain was in a war with the French at the same time.
britain
Britain was not involved in the French Revolution. The common people overthrew the French aristocrats.
Britain (la Grande-Bretagne in French) is not part of France. But Brittany (la Bretagne in French) is a French western region.
Britain
Britain.
the French
Britain - La Grande Bretagne. (You need the Grandeto distinguish it from La Bretagne, which is Brittany.
The french
The french
French
The general Charles de Gaulle organized the Free French forces from Britain.