1. The Louisiana Purchase Treaty was ratified on May 2, 1803, which transferred ownership of Louisiana Territory from France to the United States. This acquisition doubled the size of the United States and significantly expanded its western territory.

2. On May 2, 1862, Union forces led by Admiral David Farragut seized control of New Orleans during the Civil War. This was a crucial victory for the Union in the South, as New Orleans was a key port on the Mississippi River.

3. In 1892, the New Orleans Cotton Exchange, which was one of the largest cotton exchanges in the world, was incorporated on May 2. The cotton trade was instrumental in the economic growth of Louisiana during the late 19th and early 20th centuries.

4. The Battle of Baton Rouge took place on May 2, 1863, during the Civil War. Confederate forces attempted to recapture the city, but were defeated by Union troops. This battle resulted in over 500 casualties.

5. On May 2, 1930, the Huey P. Long Bridge opened to traffic. The bridge spans the Mississippi River and connects the cities of Baton Rouge and West Baton Rouge. At the time of its construction, it was the longest bridge in the world.