After the war, unemployment surged, prices soared, and rationing continued; Parisian households were limited to 300 grams of bread per day and meat only four days a week. A general strike paralysed the city on 21 July 1919.[170] The French Communist and Socialist parties competed for influence with the workers. The future leader of Vietnam, Ho Chi Minh, worked in Paris from 1919 to 1923, studying nationalism and socialism.[171] Leopold Senghor, the future first president of Senegal, arrived in 1928 to study and became a university professor and eventually a member of the Académie Française.