Yes, they were legitimate because there should be no taxation without representation. Many of the things they were being taxed on were used heavily succh as paper and tea.
Countries such as Spain, France and Portugal colonized the region. Although most of Latin America was colonized by Spain, the countries of Portugal and France also had major influences on the region. Due to war and disease, native populations were decimated.
The congress is very important, it represents freedom and and thats why it's so well protected!
The main difference is which part of Europe they came from, and the numbers of immigrants. There were many, many more "New Immigrants'" than old, 20 million people between 1880 - 1920. And the New Immigrants came mostly from southern and Eastern Europe, which meant they were almost all Catholics.