The flag of Vietnam , or `` red flag with a gold star '' ( cờ đỏ sao vàng ) , was designed in 1940 and used during an uprising against French rule in southern Vietnam that year . Red symbolizes the goals of social revolution behind the Vietnamese , national uprising . The star represents the five main classes in Vietnamese society -- intellectuals , farmers , workers , businesspeople and military personnel .

Question: what flag is red and has a gold star
Answer: The flag of Vietnam