Why did Congress impose economy extinction on South Africa?

Congress imposed economic sanctions on South Africa primarily to protest against the apartheid regime, which enforced racial segregation and discrimination against the non-white majority. These sanctions aimed to pressure the South African government to dismantle apartheid and promote human rights and equality. The U.S. Congress enacted the Comprehensive Anti-Apartheid Act in 1986, which called for a range of economic measures, including trade restrictions and divestment, to support the anti-apartheid movement. Ultimately, these efforts contributed to the eventual end of apartheid in the early 1990s.