Stay Neutral or Fight

I think that the United States did the right thing by joining the allies in World War I. There are two reasons that stand out to me on why it was necessary to fight in World War I. First and most important is national security. Germany asking Mexico to invade the United States was a reason for war all by itself. The threat of being invade is rather extreme. The United States need to defeat the Germans in Europe so they could not assist Mexico, which they were planning on doing if they won the war. The second reason was the war crimes that Germany was committing in British waters. German submarines, called U-boats, were sinking any ships they came a cross without warning. This was a huge problem because of the trade is severely hurt the trade with Britain. These acts, I believe, were more then enough reason for America to fight in World War I.