Final answer:
Cynthia Ann Parker was captured by Comanche at Fort Parker, Texas, not Fort Sumter or Fort Bliss, which pertain to different historical events.
Step-by-step explanation:
Cynthia Ann Parker was captured by Comanche warriors at Fort Parker, Texas. This event took place during a raid on May 19, 1836, when she was about nine years old. The Comanche attack on Fort Parker was part of the larger conflict between Native American tribes and European-American settlers in Texas during the early 19th century.
Focusing on the other forts mentioned, Fort Sumter gained historical significance as the location where the first shots of the American Civil War were fired in 1861. However, it is not related to the capture of Cynthia Ann Parker. Fort Bliss is a U.S. Army post in Texas but is not involved in this context either.