What are two main legacies of Louis XIV?

Answer 1

Louis XIV, commonly refered to as "the sun king" lead "le grand siecle" or the great century. He was an incredibly important figure in French history. There is a decent article on wikipedia explaining his life. I would suggest reading it. I've pasted a link to it below.

Answer 2

Massive debt due to prolonged warfare that mounted in France under his successors as the 18th century progressed,and ultimately caused national bankruptcy the French Revolution.