U.S. President Woodrow Wilson signs a document declaring war.

The transcript discusses the approval of the largest military draft in American history, initiated by Congress within a month. President Wilson plays a significant role by drawing the first number, leading to a million and a half men being called to serve, with the aim of making the world safe for democracy.

What was the purpose of calling men to the colors according to the text?

In what context is the phrase 'make the world safe for democracy' used?