Because it involved countries all over the world, there was new technology such as chemical warfare, tanks, planes, etc. and it was unrestricted warfare. The countries were attacking civilians as well. Also there were diseases.
The answer is A. Interact with water supplies
Africans were the immigrants to the British New World that had no choice in their destinations or destinies. The first African Americans that arrived in Jamestown in 1619 on a Dutch trading ship were not slaves, nor were they free. They served time as indentured servants until their obligations were complete.
