How many hours of light exposure did the first photographic image require
a. five
b. eight
c. nine
d. ten
e. twenty-four

Morale, better military generals, and allies in europe were apparent advatages of the?

How does the battle of midway illustrate the importance of intelligence gathering and espionage in modern warfare?

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons