Which of the following is a characteristic of all constitutional governments ?
a. presidential elections are held every 4 years
b. government power is held by a single individual
c. formal and effective limits are placed on the powers of government
d. the government (or officials) recognize no formal limits on its power
e. the government follows the wishes of the majority

He used heavily armed planes.

Explanation:

In Adolf Hitler´s plans, the Luftwaffe (air force) had to play a major role in destroying Britain´s capacity to wage war and in crushing the morale of British people. Hiler ordered frequent bombings raids on British cities. Because he could not easily invade Britain, he could not use the same tactics he had used in France and Belgium (the Blitzkrieg).