D. The Kansas-Nebraska Act states that slaves were only allowed in the states below a certain point. And that the number of slave states and free states must remain equal.
President Roosevelt was born during the Industrial Revolution where everything from the workforce to travel is transitioning from manual to mechanical. Railroads were the epitome result of Industrial Revolution. It erased the separation of countries due to its distances, paving way for new commerce. It made towns along the railway thrive. However, it also meant that those who had the control of the railway system can have the control of the land. Roosevelt was instrumental in stopping wealthy railroad owners from taking control of the American West when he implemented the Sherman Anti-Trust Law.
The Articles of Confederation did not allow taxes to be collected, as well as not establishing a national bank, which left the nation in debt.
The members of Dadaist Artistic movement felt that the logic and reason behind capitalist society led to WWI. This belief they felt had led to irrationality and chaos in the society which eventually led to the war.