21 June 1900 June 20, 2014 Author: Staff China formally declares war on the United States, Britain, Germany, France and Japan. Famous Words of Inspiration..."Just because something doesn't do what you planned it to do doesn't mean it's useless." Thomas A. Edison — Click here for more from Thomas A. Edison Related posts: 14 March 1900 21 June 1798 21 June 1864 Categories: History Tags: 1900, 21 June