The environmental movement (sometimes referred to as the ecology movement), also including conservation and green politics, is a diverse scientific, social, and political movement for addressing environmental issues.
U.S. Entry into World War I, 1917. 1  On April 2, 1917, President Woodrow Wilson went before a joint session of Congress to request a declaration of war against Germany.
On April 4, 1917, the U.S. Senate voted in support of the measure to declare war on Germany. The House concurred two days later. The United States later declared war on German ally Austria-Hungary on December 7, 1917.World War I Trenches in France. Germanyâs resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilsonâs decision to lead the United States into World War I.owever, by 1917, the continued submarine attacks on U.S. merchant and passenger ships, and the âZimmerman Telegramâsâ implied threat of a German attack on the United States, swayed U.S. public opinion in support of a declaration of war.