Why were the radical repudlicans able to push their own plans through the government?

Radical Republicans were able to push their plans through the government due to a combination of their political power in Congress, the Republican Party's majority following the Civil War, and the urgency for Reconstruction after the conflict. They capitalized on public sentiment for civil rights and sought to implement their vision of a transformed society, which included protecting the rights of freed slaves. Additionally, President Andrew Johnson's lenient approach to Reconstruction and subsequent conflicts with Congress facilitated the Radical Republicans’ legislative goals. Their commitment to a more equitable society resonated with many, allowing them to advance their agenda effectively.