sentences:  As they were prohibited from positions in the government or military, many became farmers, peddlers, artisans and shopkeepers.Argentina kept its doors open to Jewish immigration until 1938, when Adolf Hitler and the Nazis in Germany began to take more actions against Jews, and tensions rose across Europe in preparation for war.The government imposed new regulations on immigration; it was severely curtailed at a time of increasing persecution of Jews and the outbreak of World War II, when Jews sought a safe haven from the Nazis.