Answer:
Explanation:
Maya mathematics was far ahead of Europe for many centuries.
Answer:
increased public concern regarding people's impact on the environment
Explanation:
Since the 1950s. a growing concern in American scientists and politicians on the impact of the human civilization on the environment prepared the conditions for the establishment of the Environmental Protection Agency, which was founded in 1970 by US president Richard Nixon.
Some westward expansion was inevitable by the United States, especially after the "Louisiana Purchase", and after people embraced the idea of Manifest Destiny, which claimed that the US was "destined" to expand from the Atlantic to the Pacific.
Making and Carrying Out Foreign Policy. America's foreign policy today covers a wide range of functions and issues. It includes establishing and maintaining diplomatic relations with other countries and international organizations such as the United Nations and the Organization of American States.