Settlement houses were founded in the late 1800s by
new immigrants.
industrial workers.
social reformers.
political machines.

Settlement houses were founded in the late 1800s by "social reformers," since the main idea of such houses was to close the gap between the super rich and the super poor. 

Gulf War Syndrome. A prominent condition affecting Gulf War Veterans is a cluster of medically unexplained chronic symptoms that can include fatigue, headaches, joint pain, indigestion, insomnia, dizziness, respiratory disorders, and memory problems.