Misc: Common name for a family of herbaceous flowering plants?

Questions

On This Day In January 1920 - The League of Nations ratified the Treaty of______ , officially ending World War I with Germany.?

On This Day In January 1920 - The League of ______ held its first meeting in Geneva.?

On This Day In January 1926 - Fritz Lang's film "______ " was first shown, in Berlin.?

On This Day In January 1928 - The Soviet Union ordered the exile of Leon______ .?

On This Day In January 1943 - U.S. President Franklin D. Roosevelt sailed from Miami, FL, to Trinidad thus becoming the first ______ President to visit a foreign country during wartime.?