Complex sentence: This huge area, some of which was contested by other powers, was called "Virginia" by the English, in honor of their reigning monarch, Queen Elizabeth I, often called the "Virgin Queen" because she remain unmarried.
Split into simpler sentences: This huge area, some of which was contested by other powers, was called "Virginia" by the English. They named it in honor of their reigning monarch, Queen Elizabeth I, often called the "Virgin Queen" because she remain unmarried.