Unfunded mandates that was an easy answer you just have to read and watch the videos if this is for e2020 kids. I m glad I helped you if you need anything else answered just look my up on fb Shania saenz and I m in the MCA Moter Club Of America you can turn 40 dollars in to 2000 dollars in a week its not scam because it comes with wonderful benefits that will change your life!! If you would like to know what those benefits are just go to the MCA Moter Club Of America Benefits. If you would like to sign up here is my Link Tvcmatrix.com/ssaenz7
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Develop cost-efficient methods to use solar energy
Improve fuel efficiency in automobiles
Increase the use of wind power
Reduce the use of coal and oil
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Answer:
The Cold War between the U.S. and Soviet Union originated from postwar disagreements, conflicting ideologies, and fears of expansionism. At both the Yalta Conference and Potsdam Conference, U.S. and Soviet leaders sharply disagreed over the future of the post-war world.

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The Cold War | Boundless US History
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Answer:
C. a concern about the Vietnam War
Explanation:
In the late 1960s, the members of the counterculture share with many other American citizens the "concern about the Vietnam War."
The Vietnam war which lasted for about 20 years, beginning in 1955 and ended in 1975, saw the northern Vietnamese go against the South Vietnamese.
Then, with the American involvement lasting more than they had envisaged after committing themselves to take a side in the war, the counterculture movements and American society in general, joined together to express their desire to end the Vietnam War.
