Why did the feudal system develop?
a. the lords needed to protect their land from other nobles.
b. the kings had little power left.
c. viking raiders and armed bandits threatened everyone.
d. all of the above

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.