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.
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The United States tried to limit North Vietnam's power as they were afraid of a domino effect occurring and the spread of communism into other neighboring nations occurring
Answer is A.... its designed to regulate colonial trade and enabled England to collect duties (taxes) in the Colonies. American Colonies Index.
The the period of the second party system (mid 1824-1860)
