40 million-90 million: Estimated Native American population prior to European colonization

2.8 million: Estimated number of Native Americans, 2000 census

2005: Year Boston repealed 330-year-old law barring Native Americans from entering the city

150: Approximate number of Algonquian words used in English, including caucus, wigwam and toboggan

153: Lakota men, women and children killed in the December 1890 Wounded Knee Massacre

Source: MSN Encarta