Research has shown that from making the best steel in the world to teaching the world to count, India was actively contributing to the field of science and technology centuries long before modern laboratories were set up.
Sweatt v. Painter is famous today in Supreme Court history in that it laid the foundation for the argument used a few years later in Brown v. Board of Education
Like Hitler, Mussolini encouraged italy's economic Recovery by :Invasion
In World War 2, Hitler and Mussolini joined forces together with Hideki Tojo and created an alliance called the Axis Power, which goals is the 'Restore' their country to the former glory.
Either for religious freedom, rights or the country they immigrated from had a dictator. It can be many reasons why they migrate to other countries.