Resources
As I mentioned before, you can use any of these sites for your assignments. However, some of these sites will be more suitable for the certain topics within the assignments. It is up to you to navigate through the sites and decide on what important material you want to include in your assignments. Feel free to use sources other then the ones I have given. You can also refer to your text.
Causes:
http://www.firstworldwar.com/origins/causes.htm
http://www.eyewitnesstohistory.com/w1frm.htm
http://historicaltextarchive.com/books.php?op=viewbook&bookid=66
http://parlorsongs.com/insearch/worldwar1/ww1no1.asp
http://www.archives.gov/education/lessons/zimmermann/
http://www.classbrain.com/artteenst/publish/article_100.shtml
Neutrality:
http://arcweb.sos.state.or.us/exhibits/war/intro/neutral.html
http://parlorsongs.com/insearch/worldwar1/ww1no1.asp
After World War One:
www.lifeintheusa.com/landhistory/worldwarone.htm
http://www.voanews.com/specialenglish/archive/2006-05/2006-05-03-voa5.cfm
http://parlorsongs.com/insearch/worldwar1/ww1no1.asp