1\. Interdisciplinary  During this year, The Adventures of Tom Sawyer was p
1\. Interdisciplinary  During this year, The Adventures of Tom Sawyer was published, Wild Bill Hickok died, George Custer was killed at the Battle of the Little Bighorn, and the first phone call was made by Alexander Graham Bell. Colorado became the 38th state in this year, which is also the title of a Gore Vidal novel. Its Presidential Election eventually led to the Hayes Presidency. Identify this year during which a major exposition was held in Philadelphia to celebrate the Centennial.
1\. Interdisciplinary  During this year, The Adventures of Tom Sawyer was published, Wild Bill Hickok died, George Custer was killed at the Battle of the Little Bighorn, and the first phone call was made by Alexander Graham Bell.