Dust storms and falling crop prices
Disenfranchisement after the Reconstruction Era<span> in the United States of America was based on a series of laws, new constitutions, and practices in the South that were deliberately used to prevent </span>black<span> citizens from </span>registering to vote<span> and voting. These measures were enacted by former </span>Confederate<span> states at the turn of the 20th century, and by Oklahoma upon statehood</span><span> although </span>not<span> by the </span>border slave states<span>. Their actions defied the intent of the </span>Fifteenth Amendment<span> to the </span>United States Constitution<span>, </span>ratified<span> in 1870, which was intended to protect the </span>suffrage<span> of </span>freedmen<span> after the </span>American Civil War<span>.</span>
The idea behind the rule is that one person's voting<span> power is closely equivalent to another </span>person's within the state. It practically means that under the Equal Protection Clause of the Constitution <span>legislative </span>voting<span> districts must be the same in population size.</span>
Okay so
14. I would say the answer to this one is: A new wave of nationalism.
15. The answer to this one is: Expansion of Slavery.
16. I think it is: The Taiping Rebellion.
I hope this helps you.