On February 6, 1900, the Permanent Court of Arbitration (PCA) was founded with the ratification of the 1899 Convention for the Pacific Settlement of International Disputes. Set at The Hague in the Netherlands, the PCA was the first international tribunal established to settle disputes between nations. The PCA was later revised by the subsequent 1907 Convention for the Pacific Settlement of International Disputes. Today, the PCA is housed at the Peace Palace in The Hague and is comprised of 109 member countries.

On February 6, 1933, the 20th Amendment to the US Constitution was ratified by the requisite majority of states, moving the start of presidential, vice-presidential and congressional terms from March to January in an effort to shorten the problematic "lame duck" period.

Learn more about the 20th Amendment.