The Mayans made striking advances in writing, astronomy, and architecture. Both the Mayans and the Aztecs created highly accurate calendars. The Aztecs adapted earlier pyramid designs to build massive stone temples. The Incas showed great skill in engineering and in managing their huge empire. Aztec education was an important part of their culture. The Aztecs were very advanced scientific thinkers and mathematicians for their time. The Aztec number system was far more advanced than any other cultures at the time. In addition, Aztec science relied heavily on math. Which is why their calendars were highly accurate.
<span>Nearly all colonies and, later, states in the United States were settled by migration from another colony or state, as foreign immigration usually only played a minor role after the initial settlements were started. Many new immigrants did end up on the frontiers as that was where the land was usually the cheapest.
</span>
Answer:Emergency Quota Law of 1921
In 1921, there was a drastic reduction in immigration levels from other countries, principally Southern and Eastern Europe.
Explanation:
Long title An Act to limit the immigration of aliens into the United States.
Nicknames Per Centum Limit Act
Enacted by the 67th United States Congress
Effective May 19, 1921
