Alaska could be the highest state because Mount McKinley is the highest point in the United States. Colorado has the highest mean elevation of any state, which could also be considered a candidate for highest state. So technically they both can be considered correct answers. It just depends if you mean the highest point in a state(Alaska) or the highest mean altitude for a state(Colorado).
In 1910, the US city with the highest per capita income was New York City.
New York City
Denver
Reno
Alma, Colorado
new york
The Mile High City - Denver, Colorado.
Flint, Michigan had the highest murder rate in the US for 2010.
new york
Leadville, Colorado.
Washington DC
Japan Tokyo