Which country was Marie Curie a citizen of from 1895?

Marie Curie was a citizen of France from 1895.

Born Maria Skłodowska in Warsaw in 1867, Curie initially belonged to the political world of the Russian Empire because her birthplace was then in Congress Poland, a territory under Russian control. She moved to Paris in 1891 to study physics, chemistry, and mathematics at the University of Paris.

In 1895, she married the French physicist Pierre Curie. The marriage brought French citizenship, while she continued to identify strongly with her Polish heritage. Her scientific name often appeared as Marie Skłodowska-Curie, and she later named the element polonium after Poland. That choice reflected her wish to draw attention to Poland’s lack of an independent state at the time.

The answer is sometimes confused because Curie was both Polish-born and French. “Polish” accurately describes her birth, cultural identity, and scientific legacy; “French” is the citizenship answer for the period beginning in 1895. She lived and worked primarily in France, where she became a professor at the University of Paris and directed the Radium Institute.