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The Romantic Era replaced what was called the Classical Era (not to be confused with the generalized term Classical meaning not Popular or Pop). The Romantic Era was followed by the Modernistic Era, which started in the late 19th/early 20th century and is still with us currently.
During this era, the largest number of immigrants to the US came from Italy and Germany.
poetry
the industrial revolution
An "era" is a period of time thus what you would see during an era would depend on what that period was and as you have not told us this we can not answer your question in full.
Japan took part in the World War while America was in its expansion era
1926
television
5 thousand
The American Era in the Philippines lasted from 1898 to 1946. President McKinley made the most political differences during this time period.
205 were on a list. but according to the McCarthy Era worksheet it was none there never was a list.
For the US Army, during the Vietnam War, a battalion was about 600 men. The US Marine Corps will be similar in organization (during the Vietnam era).