Immigration began booming in the 1920's so the U.S. had to begin putting restrictions on the immigration laws that would last until, or later than the 60's. Throughout eastern and southern Europe after 1880, Poles, Ukrainians, Greeks, Germans, Hungarians, Czechs, Slovaks, Slovenes, Jews, and dozens of other ethnic groups were fleeing repressive regimes in Russia, Austria-Hungary, Germany, and the Ottoman Empire, seeking both economic opportunities and personal freedoms in North America. During the 1890s, immigration to Canada averaged about 37,000 per year; between 1905 and 1914, the figure rocketed to almost 250,000 per year. Thus, when war broke out, there were millions of people in both the United States and Canada who had close personal ties with countries on both sides of the conflict. This provided a powerful impulse for politicians to stay out of the war.