/tags/lesson-plans lesson plans en-US Copyright Wed, 08 Mar 2017 09:00:05 GMT /history/2017-03-08/100th-anniversary-of-wwi-african-americans-who-served World War I began in Europe on July 28, 1914, but the United States did not enter the war until April 6, 1917. More than 17 million military personnel and… Wed, 08 Mar 2017 09:00:05 GMT /history/2017-03-08/100th-anniversary-of-wwi-african-americans-who-served