The culture of the United States is primarily Western, but is influenced by African, Native American, Asian, Polynesian, and Latin American cultures. A strand of what may be described as American culture started its formation over 10,000 years ago with the migration of Paleo-Indians from Asia, Oceania, and Europe, into the region that is today the continental United States. The United States of America has its own unique social and cultural characteristics such as dialect, music, arts, social habits, cuisine, and folklore. The United States of America is an ethnically and racially diverse country as a result of large-scale migration from many ethnically and racially different countries throughout its history. Differing birth and death rates among natives, settlers, and immigrants are also a factor.