What if Fdr didn’t seek the third term

If FDR did not seek a third term, it would have significantly altered the course of American history. Here are some of the possible outcomes:

Harry Truman would not have become President: If FDR had stepped down after two terms, Vice President Harry Truman would not have become President. Instead, a new Vice President would have been chosen to run with FDR's successor in the 1944 election. Truman's presidency, which was marked by the end of World War II, the beginning of the Cold War, and the start of the civil rights movement, would not have happened.
A different Democrat would have been elected in 1944: If FDR had retired after two terms, the Democratic Party would have nominated a different candidate to run for President in 1944. It is possible that the party would have chosen someone with a different approach to the war effort and post-war reconstruction.
The Republican Party might have won the 1944 election: If the Democrats had nominated a weaker candidate, or if the public had grown tired of the war effort or Roosevelt's leadership, the Republicans might have won the 1944 election. This would have put a different President in the White House during the end of World War II and the beginning of the Cold War.
The 22nd Amendment might not have been passed: FDR's decision to run for a third term was one of the reasons that the 22nd Amendment, which limits Presidents to two terms, was passed in 1951. If FDR had not run for a third term, it is possible that the amendment might not have been passed, and future Presidents might have been able to serve more than two terms.

Overall, if FDR had decided not to seek a third term, it would have had far-reaching consequences for American history. The course of World War II, the Cold War, and the civil rights movement might have been different, and the role of the presidency in American politics might have been altered.