Europeans ...
Dias
de Gama,
Columbus
Answer:
not sure but
Explanation:
The destruction and length was mostly due to the new technological advances of: machine guns, barbed wire, and rapid firing artillery. Also the new “trench warfare” method caused many deaths on both sides but prevented any significant advancement. ... Stalemate-deadlock made the war long as advance was very difficult.
Was made to share information, ideas, and culture. Astronomical observatories ended up being built as well.
During the 1800s, nativists promoted the idea that immigrants contributed to unemployment by competing for jobs that they believed should go to people born in America..
hope this helps