What qualifies someone to become a citizen of the United States is if they have had a green card for 5 years; be able to read/write in English; go through a naturalization process.
A historian is a person that researches about the past. He has a methodical way to both find and narrate the information. He must be very objective and treat all evidence as important, without choosing any sides and without leaving anything to his personal interpretation.
A historian should not only talk and research about the facts, but he should care about the motives of the historical actors.
The register of history has been in human life since the beginning on time and historians have existed since the old civilizations. Modern historians normally work at universities, museums or as writers.
