Which coalition was the most formidable in opposing Truman's domestic policy initiatives?

The most formidable coalition in opposing Truman's domestic policy initiatives consisted of Republicans and southern Democrats. This opposition was rooted in differing political ideologies and regional interests during Truman's presidency.

The Republicans were generally critical of Truman's efforts to expand the New Deal and implement reforms known as the Fair Deal, which aimed to address issues like healthcare, housing, and civil rights. They opposed what they viewed as excessive government intervention in the economy and society.

Southern Democrats, on the other hand, were particularly resistant to Truman's civil rights initiatives, as they sought to maintain the status quo of racial segregation and disenfranchisement in the South. This alignment created a powerful coalition against Truman's domestic agenda, combining the national opposition from the Republican Party with the regional interests of southern Democrats who feared the social changes associated with Truman's policies.

This coalition effectively stifled many of Truman's proposals and highlighted a broader divide in the post-war political landscape, illustrating the challenges he faced in pushing his domestic agenda forward.