4th » The Eleventh Amendment to the United States Constitution known as 11th Amendment to the U.S. Constitution is passed by the United States Congress e.g U.S. Congress.
14th » Eli Whitney is granted a patent for the cotton gin.
27th » The Federal government of the United States United States Government establishes a permanent United States Navy navy and authorizes the building of Original six frigates of the United States Navy six frigates.
27th » Denmark and Sweden form a neutral country or neutrality compact.
28th » Allies under the prince of Saxe-Coburg-Gotha Coburg defeat France French forces at Le Cateau-Cambrésis Le Cateau.