2) If wars have been fought for thousands of years, why is the war between 1914 and 1918 commonly referred to today as the "First World War?"

In 1945, history began using the phrase "First World War" because historians considered 1914-1918 as the start of a new sort of international conflict, the  world's first industrialized "total" war, which was followed by a second industrialised world war, 1939-1945.

Explanation:

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.

answer; i believe that the correct answer is (chronological order);