The proletariat made up the majority of the Roman population.
El Paleozoico se divide en seis períodos: Cámbrico (la vida animal florece en los mares), Ordovícico (dominan los invertebrados), Silúrico (primer animal de respiración aérea), Devónico (aparecen peces con escamas duras y los anfibios), Carbonífero (aparecen grandes bosques de helechos, primeros reptiles etc,
The Second Indochina War (aka the Vietnam War) began as a conflict between the South Vietnamese army and government, and the communist Viet Cong. The United States publicly supported the South Vietnamese government but didn't want to join the war unless absolutely necessary.
