Why did Wilson ask congress for declaration of war against Germany in April 1917?

President Woodrow Wilson asked Congress for a declaration of war against Germany in April 1917 primarily due to Germany's unrestricted submarine warfare, which threatened American lives and commerce. The sinking of ships like the Lusitania and the continued attacks on American vessels inflamed public opinion and raised concerns about national security. Additionally, Wilson aimed to make the world "safe for democracy," believing that U.S. involvement was essential for a just peace and to counteract autocratic regimes.