It would be the first statement, They were barred from entering the school by National Guard troops and rioters.
The Audience was Harvard Students. hope this can help:)
It produced more arn in a shorter amount of time.
Hoped this helped!
Answer:
Aviation in World War I started with primitive aircraft, primitively used. Technological progress was swift, leading to ground attack, tactical bombing, and highly publicized, deadly dogfights among aircraft equipped with forward-firing, synchronized machine guns from July 1915 onwards.
Explanation: