YOU SAID:
all human history is the history of class struggle
INTO JAPANESE
人類のすべての歴史は階級闘争の歴史
BACK INTO ENGLISH
All the history of mankind is the history of class struggles
INTO JAPANESE
人類のすべての歴史は階級闘争の歴史
BACK INTO ENGLISH
All the history of mankind is the history of class struggles
That didn't even make that much sense in English.