question: OPTIONS:
- yes
- no
World War I demonstrated that aircraft could be an important part of the battlefield, but in some nations it was the prospect of strategic air attack that was the main issue, presenting both a threat and an opportunity.
The future of aircraft in war situations was important because of the growth in what two areas?

answer: no

question: OPTIONS:
- yes
- no
In this way natural history spread many of the scientific developments of the time, but also provided a new source of legitimacy for the dominant class.
The idea of what quality was a social indicator that provided a new source of legitimacy for the dominant class?

answer: no

question: OPTIONS:
- yes
- no
According to Brest, land belonging to Native Americans was reduced from 138 million acres in 1887 to 52 million acres in 1934.
How much land did the Native Americans own in 1934?

answer: yes

question: OPTIONS:
- yes
- no
Estonia has four seasons of near-equal length.
What is the similar trait of Estonia's four seasons?

answer:
yes