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.
Answer:
Leif Erikson
Explanation:
The Viking Explorer Who Beat Columbus to America. Leif Eriksson Day commemorates the Norse explorer believed to have led the first European expedition to North America. Nearly 500 years before the birth of Christopher Columbus, a band of European sailors left their homeland behind in search of a new world.
Maybe include the factors you can choose from.
If it was the First World War, it would be the sinking of
the Lusitania and the Zimmerman telegram.
This caused Americans to abandon their isolationist policy and join the
First World War. If it was WWII, it could
be bombing of Pearl Harbor.
<span>The Immigration and Naturalization Act of 1965, also known as the Hart-Celler Act, abolished an earlier quota system based on national origin and established a new immigration policy based on reuniting immigrant families and attracting skilled labor to the United States</span>