Before becoming President of the United States, Theodore Roosevelt<span> was the Assistant Secretary of the Navy. He resigned in 1898 to organize the Rough Riders, the first voluntary cavalry in the </span>Spanish-American War<span>. The U.S. was fighting against Spain over Spain's colonial policies with Cuba.
Hope this Helps!!</span>
The difference is that Roosevelt was ready to do more to
solve the problems brought about by the Great Depression while Hoover was more
hesitant to let government intervene.
The programs he launched such as the National Credit Corporation, the
Reconstruction Finance Corporation, and the Emergency Relief and Construction
Act <span>came late to
do any good. Upon assuming office,
Roosevelt quickly launched various programs to solve the problems. In the end, Roosevelt was right in his
approach of Government intervention because at the time, people needed support to uplift their lives.</span>
I think it's the telephone because it allows people to communicate better and customers or workers don't have to walk up to everyone and disturb them. You may elaborate more on this with your own opinion