23.1 American isolationism and the european origins of war  (Page 5/11)

A key factor driving U.S. engagement was economics. Great Britain was the country’s most important trading partner, and the Allies as a whole relied heavily on American imports from the earliest days of the war forward. Specifically, the value of all exports to the Allies quadrupled from $750 million to $3 billion in the first two years of the war. At the same time, the British naval blockade meant that exports to Germany all but ended, dropping from $350 million to $30 million. Likewise, numerous private banks in the United States made extensive loans—in excess of $500 million—to England. J. P. Morgan’s banking interests were among the largest lenders, due to his family’s connection to the country.

Another key factor in the decision to go to war were the deep ethnic divisions between native-born Americans and more recent immigrants. For those of Anglo-Saxon descent, the nation’s historic and ongoing relationship with Great Britain was paramount, but many Irish-Americans resented British rule over their place of birth and opposed support for the world’s most expansive empire. Millions of Jewish immigrants had fled anti-Semitic pogroms in Tsarist Russia and would have supported any nation fighting that authoritarian state. German Americans saw their nation of origin as a victim of British and Russian aggression and a French desire to settle old scores, whereas emigrants from Austria-Hungary and the Ottoman Empire were mixed in their sympathies for the old monarchies or ethnic communities that these empires suppressed. For interventionists, this lack of support for Great Britain and its allies among recent immigrants only strengthened their conviction.

Germany’s use of submarine warfare also played a role in challenging U.S. neutrality. After the sinking of the Lusitania , and the subsequent August 30 sinking of another British liner, the Arabic , Germany had promised to restrict their use of submarine warfare. Specifically, they promised to surface and visually identify any ship before they fired, as well as permit civilians to evacuate targeted ships. Instead, in February 1917, Germany intensified their use of submarines in an effort to end the war quickly before Great Britain’s naval blockade starved them out of food and supplies.

The German high command wanted to continue unrestricted warfare on all Atlantic traffic, including unarmed American freighters, in order to cripple the British economy and secure a quick and decisive victory. Their goal: to bring an end to the war before the United States could intervene and tip the balance in this grueling war of attrition. In February 1917, a German U-boat sank the American merchant ship, the Laconia , killing two passengers, and, in late March, quickly sunk four more American ships. These attacks increased pressure on Wilson from all sides, as government officials, the general public, and both Democrats and Republicans urged him to declare war.

The final element that led to American involvement in World War I was the so-called Zimmermann telegram    . British intelligence intercepted and decoded a top-secret telegram from German foreign minister Arthur Zimmermann to the German ambassador to Mexico, instructing the latter to invite Mexico to join the war effort on the German side, should the United States declare war on Germany. It further went on to encourage Mexico to invade the United States if such a declaration came to pass, as Mexico’s invasion would create a diversion and permit Germany a clear path to victory. In exchange, Zimmermann offered to return to Mexico land that was previously lost to the United States in the Mexican-American War, including Arizona, New Mexico, and Texas ( [link] ).