Which of the following was a MAIN cause of World War I?
O Neo-liberalism
Ineptitude
O Militarism
Ancillary Powers

militarism

Explanation:

Basically, militarism, a country's glorifying of its own military, can cause countries to become arrogant and power-hungry, as well as competitive for such power. 

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.