How did the united states respond when german u-boats sank the lusitania?

by remaining neutral after germany agreed to limit submarine warfare
by entering world war i on the side of the allied countries
by increasing the amount of supplies sent to allied countries
by barring all trade imports and exports with germany

The idea of liberalism in eighteenth-century british politics: a. had mainly a civic and social quality. b. prompted two eighteenth-century leaders, joseph mccarthy and hugh mccarran, to demand independence for ireland. c. brought great wealth and power to its main voice, john locke. d. was compatible with inequalities in wealth and well-being. e. had the same meaning as liberalism in twenty-first-century american politics.

What were the terms behind germany's surrender during wwi?

1. what was the purpose of the communist international organization?