Need help filling out a map of Europe!?

I am filling out a map of Europe during WWI and need help! I need to know where the British blockade lines where in Europe during WWI and the Western Front (1914) in Europe during WWI. I also need to know where Rhineland, Danzig, Alsace-Lorraine, and Saar Basin are on a map of Europe after WWI. Any helpn would be great. Thanks in advance!