Dr. Keisha Johnson has published an analysis of the ancestry of America, focusing on the years 1870, 1920, 1970, and 2010. The study examines demographic changes over these key years in American history.
The research provides insights into the evolving composition of the American population, highlighting significant trends and shifts in ancestry. The findings are detailed in an article available through Springer.
For more information on related topics, see the article on recent developments in politics.
