All I know is number one sorry :(
21. A
Answer:
Early public-school curriculum was based on strict Calvinism and concentrated on teaching moral values. ... In the 1800s, Horace Mann of Massachusetts led the common-school movement, which advocated for local property taxes financing public schools. Mann also emphasized positive reinforcement instead of punishment.
The slave that sued his master for freedom was Dred Scott.
The reason why many of the machines that sped up production and travel invented during the 18th and 19th centuries is because "<span>D. There was a heightened interest in science during this time," since this was during the age of the Enlightenment. </span>