What major event took place during President Franklin D. Roosevelt's first 100 days in office?

During President Franklin D. Roosevelt's first 100 days in office, the major event that took place was the initiation of the New Deal programs. This period, from March to June 1933, was marked by an unprecedented flurry of legislative activity aimed at addressing the economic crisis of the Great Depression. Roosevelt and his administration pushed through a series of programs and reforms designed to provide relief for the unemployed, stimulate economic recovery, and reform the financial system.

The New Deal represented a fundamental shift in the role of the federal government in the economy, as it involved significant intervention and the establishment of various agencies to oversee programs for job creation, infrastructure development, and social welfare. Key initiatives included the Civilian Conservation Corps (CCC), which provided jobs in natural resource conservation, and the Agricultural Adjustment Act (AAA), designed to boost agricultural prices by controlling production.

This period set the tone for Roosevelt's presidency and established many of the social safety nets and regulatory frameworks that have persisted in American policy. The other options refer to events that either occurred before or after this critical period in American history, highlighting the significance of the New Deal as a landmark moment in response to the economic challenges facing the nation.