1. On August 18, 1850, the construction of the Wabash and Erie Canal was completed in Indiana. The canal extended from Toledo, Ohio, to Evansville, Indiana, and helped transport goods and people across the state.

2. The Indiana State Fair, one of the largest and oldest state fairs in the United States, first opened on August 18, 1852. The fair continues to be a cherished tradition in Indiana, showcasing the state's agricultural heritage and offering a variety of entertainment and exhibitions for visitors.

3. On August 18, 1919, the 19th Amendment to the U.S. Constitution was ratified, granting women the right to vote. Indiana was one of the first states to ratify the amendment, which paved the way for greater gender equality in the United States.

4. The USS Indiana, a battleship that served in both World War I and World War II, was commissioned on August 18, 1942. The ship was named in honor of the state of Indiana and was the second ship in the U.S. Navy to bear that name.

5. On August 18, 1967, the Red Skelton Performing Arts Center opened in Vincennes, Indiana. The center was named in honor of local comedian and entertainer Red Skelton, who donated funds to help build the facility. The center continues to be an important cultural institution in the state, hosting a variety of performances and events.