Why did the monarchs claim more power in the sixteenth century?

In the sixteenth century, monarchs claimed more power due to the decline of feudalism and the rise of centralized nation-states, which allowed them to consolidate authority over their realms. The Protestant Reformation also played a significant role by challenging the Catholic Church's influence, enabling rulers to assert control over religious and political matters. Additionally, the wealth acquired from exploration and colonization provided monarchs with the resources necessary to strengthen their governments and military, further enhancing their power.