Why did federalism end?

Federalism has not ended; rather, it continues to exist as a system of government in many countries, including the United States. However, debates about the balance of power between federal and state governments have evolved over time, influenced by political, social, and economic changes. Factors such as shifts in public policy, Supreme Court decisions, and political movements have shaped the dynamics of federalism. While some argue for stronger federal authority, others advocate for state sovereignty, reflecting the ongoing tension within federal systems.