封建社会代替奴隶社会,资本主义代替封建主义,社会主义经历一个过程发展后必然代替资本主义。
A.
Feudal society replaced slave society, capitalism supplanted feudalism, and, after a long time, socialism will necessarily supersede capitalism.
B.
Feudal society replaced slave society, capitalism replaced feudalism, and, after a long time, socialism will necessarily replace capitalism.