Complex sentence: Regency reenactment groups are groups of people of all ages who are dedicated to re-enacting the British Regency period between 1811 and 1820 through costume, manners, food, and social gatherings that celebrate the spirit of the era.
Split into simpler sentences: Regency reenactment groups are made up of people of all ages who share a common interest in the British Regency. They are dedicated to re-enacting the period between 1811 and 1820 through costume, manners, food, and social gatherings that celebrate the spirit of the era.