<span>They are eighteenth and nineteenth century American educators, Hannah Adams, Noah Webster, and Jedediah Morse, designed American curricula "as a tool for nation-building and citizenship development they wrote concerning the American language, geography, history, and social themes.</span>
The third
and i think (not to sure) the first
Answer:
Abolition)
People that were freed from the slave trade started to speak up about their experiences, write books about the things that happened and just overall let people know the brutality of it all. People like William Wilberforce and Frederick Douglass were also big parts of the slave trade abolition.
The actual slave trade)
As the word about the slave trade went around, more and more people were being bought as slaves. Typically people if colour, and people that were all-round poor and couldn't afford a better lifestyle. Some people were born into slavery because their parents were slaves or their parents had debts to pay.
A the space race or c the entry of women into the work force during world war ll