That's why the first generations of German immigrants didn't identify themselves as "Germans". In the 1920s and 1930s, almost a hundred years after the first wave of immigrants had arrived, another major wave of German immigrants began arriving in Brazil again. It was tens of thousands of Germans immigrating to Brazil, due to the socioeconomic problems faced by Weimar Republic Germany and the post World War I. It was this new wave of German immigration that originated most of the Nazis in Brazil, since these new immigrants had stronger ties with Germany than the immigrants who arrived in Brazil in the 19th century.