Technology affected American lifestyles in two main ways. First, it gave Americans more leisure time. ... The invention of radio and the boom in movies, combined with the growing availability of cars, allowed Americans to pursue a lifestyle that was much more centered around fun than it ever had been before
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In battleground states, they will be more competitive. therefore, people of both parties will feel inclined to run and parties will put more money into flipping them or winning campaigns to show their strength.