I believe that finding the balance of drones would be putting a limit on how many drones a country can use at one time. I'm not sure on the other 2 questions.
Answer: The Adams–Onís Treaty (Spanish: Tratado de Adams-Onís) of 1819,
I believe 10 is C. representative democracy and constitutional monarchy
9 is C, as the state are under the authority of the US, which is the supreme law of the land
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Answer:
The civil rights movement came to national prominence in the United States during the mid-1950s and continued to challenge racial segregation and discrimination through the 1960s.
Explanation:
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