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.
The correct answer would be A.
It looks as if he is replying back to them about a situation that got him confined during "constructive": work as he talk about himself and his work while asking or waiting for an answer back .
Correct answer:
A) a massacre of unarmed Vietnamese Villagers by US troops
<u>My Lai was named one of the most horrible massacres against unarmed civilians during the Vietnam War. It happened on March 16, 1968</u>, a company of American soldiers brutally murdered the majority of people in the village of My Lai. More than 500 people were counted dead.
