Answers revealed in the comments.
In November 2019, Billboard released a list of their Top 125 Artists of All Time, with The Beatles and The Rolling Stones are ranked #1 and #2, respectively. What American band, formed in 1967, is the only other band in the top 25?
From the end of the Civil War in 1865 until 1889 when North Dakota, South Dakota, Montana, and Washington were admitted to the Union, only two other states were added. Name either of those states, which were admitted in 1867 and 1876.