One significant change that Cardinal Richelieu made to the French government after Louis XIII took power was the creation of the Intendants system. Richelieu believed that the centralization of power in the monarchy was crucial for the stability and strength of France. The Intendants were royal officials appointed by the king to oversee local administration and ensure that the king's policies were carried out. They were responsible for collecting taxes, enforcing laws, and maintaining order in their regions. The Intendants system greatly reduced the power of regional nobles and strengthened the power of the monarchy, as well as creating a more efficient and centralized system of government.