For question 4 answer is checks and balances
According to the Declaration of Independence, the three most basic rights are the right to life, liberty, and the pursuit of happiness. Notice it doesn't give a right to happiness because no one can guarantee someone's happiness, it just says that there should be an opportunity to try for happiness.
The push factors for African Americans to move was Economic exploitation, social terror and political disenfranchisement were the. This movement was also called the Great Migration