What is the origin of the word apartheid

Which of these resulted in an actual slow down or limiting of the u.s. and soviet nuclear arsenals?

Pl ! the term laissez-faire refers to the government’s approach, in the 1890s, to foreign policy affecting trade. economic policy affecting business. educational policy affecting schools. domestic policy affecting social reform.

Someone who accepted the beliefs of social darwinism would have also agreed with which of these statements?