What was one great contribution of the islamic golden age?

The segments shown below could form a triangle.

What is the definition of federalism

The edict of nantes states a: protestantism was to be the official religion in france b: huguenots would rules france and allow catholics to practice freely. c: catholicism was to be the official religion in france but protestants could worship freely. d: catholicism was to be the official religion in france and protestantism was to be outlawed.