Decline refers to a gradual decrease or loss of power, influence, or importance.
Succession crisis: A succession crisis occurs when there is uncertainty or conflict regarding who will inherit power after a ruler's death or abdication.
Economic downturn: An economic downturn refers to a period of reduced economic activity characterized by declining production, employment, and trade.
Treaty of Utrecht (1713): The Treaty of Utrecht marked an important turning point in European politics and helped contribute to the decline of the Spanish Habsburgs. It ended the War of Spanish Succession and resulted in territorial losses for Spain.