Answer:
Rapid industrialization in Russia began after communist revolution 1917 and become major goal in postwar era. Society in Russia transformed from farm workers peasants to factory workers. Rusians start developing their own “technological culture". Space program is one of the achievements. But most of all Russian society become more adaptive.
In short, suppression and eradication.
The Protestants of the early United States tended to avoid marrying and continuing the bloodlines of Native Americans due to obvious racial tension and prejudice against them. Native Americans were eradicated on a larger scale in North America rather than South America, so there would be a greater amount of Natives there. (This is because of a more complex and somehow tolerant society in the South) However, there were obviously the mestizos. While there <em>was </em>reproduction between white people and natives, it was typically a result of harassment or an uncommon desire to start a family.
In summary, the amount of Native descendants in the United States is significantly lower now than centuries before because of endless eradication and little amounts of pure-blood Native Americans being born.
Phoenicia
West Asia
Arabian Peninsula
Sub-Saharan Africa
