Answer :
Eleanor of Aquitaine built her power as a monarch through marriage.
Eleanor of Aquitaine
Eleanor of Aquitaine was the queen of two great medieval European powers – England and France. Eleanor was Queen of France from 1137 to 1152 as the wife of King Louis VII, Queen of England from 1154 to 1189 as the wife of King Henry II, and Duchess of Aquitaine in her own right from 1137 until her death in 1204.
Therefore, Eleanor of Aquitaine built her power through marriages and became the queen of two major powers- France and England
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