What did all the Presidents of the 1920s (Harding, Coolidge, Hoover) have in common?

the core of watson's work. watson is best known for taking his theory of behaviorism and applying it to child development. he believed strongly that a child's environment is the factor that shapes behaviors over their genetic makeup or natural temperament.

d) he bring down boss tweed and tammany hall.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.