The American Expeditionary Forces<span> (</span>AEF<span>) was the </span>expeditionary force<span> of the </span>United States Army<span> during </span>World War I<span>. It was established on July 5, 1917, in </span>France<span> under the command of </span>Gen. John J. Pershing<span>.</span>
Three main motivations for European exploration are the need to spread their religion (Christianity), improving the economy (acquiring more spices,gold,goods) and lastly, faster trading routes. Hope this helped :))