1. 2 hours
2. 15 min
3. 280,280 speed
4. 10 miles
5. 9 min
6. 55mph
idk if this is correct <span />
Some common aspects of the war effort during the WW1 were:
rationing -since many people were working in the war effort, less people could focus on farming, so there were many shortages.
war bonds - those were used to finance the war effort
women taking over many of men's jobs, such as in factories - this later led to female suffrage!
I think the correct answer from the choices listed above is option B. Nations did not became more self-sufficient and less dependent on world trade. Rather, the opposite of such situation happened. Hope this answers the question. Have a nice day.