Because they were just now looking in the anatomy of the human body and the first vaccines were made
How does transportation and communication impact industry? New technology, such as electricity, sparked industrial growth and made production faster and less expensive, New forms of transportation moved people and goods farther and faster. The telegraph and telephone connected people quickly over great distances
The nations had different systems of government and different economic systems. The USSR hated the U.S and it's capitalism, hoping to one day crush it but with the fall of the USSR in 1991, It was a monumental victory for capitalism over communism and socialism.
C. People began to question the authority of monarchs and emphasized individualism