Abraham Lincoln's assassination dramatically changed the Reconstruction era. ... Booth may have decided to act on his hatred after Lincoln endorsed giving the right to vote to African-American men who had served in the Union Army.
Jose Marti did not lead Spanish troops in an attack on Ybor City, Florida leading to the American entry into the Spanish American War. However, aspects of the other 3 reasons did help to lead to war.
Answer: all of the choices are correct
Explanation:
Around the turn of the twentieth century, graduates of psychology at Cornell University in Upstate New York were asked to swallow a rubber tube to perform psychological research.
Through providing data on the experience to research the responsiveness of their internal organs, Professor Edward Bradford Titchener had his students conduct a process of introspection.
At the time, the study became well known around Cornell, bringing a reputation as an unethical location to the psychology laboratory.