1. How can I send a question to the National Archives? (U.S. National Archives and Records Administration)
2. I'd like to know the order of the states' entry into the Union.
3. How can I find contact information about a veteran of World War II?
4. Where can I find information about the General Headquarters of the Allied Forces in Japan (GHQ)?

Population

1. What was the population of the U.S. in 1800, 1900, 2000?

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1. How can I send a question to the National Archives? (U.S. National Archives and Records Administration)
   Go to NARA records at NARA, and enter a question.

2. I'd like to know the order of the states' entry into the Union.
   See States by Order of Entry into Union, Information Please Almanac.

3. How can I find contact information about a veteran of World War II?
   Please check at World War II U.S. Veterans website.

4. Where can I find information about the General Headquarters of the Allied Forces in Japan (GHQ)?
   Please check the National Archives. The National Diet Library in Japan also has some materials.

1. What was the population of the U.S. in 1800, 1900, 2000?
   The population in 1800 was 5,308,483, it was 75,994,575 in 1900, and the population of the U.S. on April 1, 2000 was 281,421,906. Source: Historical Census Statistics on Population and Census 2000.