Not just History Books..
DICTIONARIES too..
International ENGLISH vs American ENGLISH (10, 20, 30 years)
Socialism, Communism, __ism..
they are "crossing" the definitions..
if i recall.. (its been a few years)
old international english definition of Socialism is the same definition of Communism in American English Dictionaries..
find old dictionaries and find out for yourself..
International vs American..