The document is about the history of ice cream in America. It states that while the first inventor of ice cream is unknown, it has a long history in the United States. Nancy Johnson invented the first ice cream churn in 1843. The first ice cream factory opened in Baltimore in 1851. The first ice cream cone was made in St. Louis in 1896. The first ice cream shop opened in New York in 1876. Now ice cream is available everywhere and America's favorite flavors are vanilla and chocolate.