Law enforcement, emergency services, road construction
The answer would be the letter B
There were actually four HUGE causes for WW1, treaties and alliances brought many countries into war, the imperialism of some countries scared other countries, and they were "defending" themselves, there was a lot of weapons stocking, and countries were creating gigantic armies, and that threatened other countries, and then we have plain old nationalism.
Monarchs were able to crush most rebellions, and people won few new rights
People have the power to choose between good and evil.
