Which contributions did Mary Edwards Walker make to the war effort? Check all that apply. She cared for prisoners of war. She te
nded to wounded soldiers. She worked as a battlefield surgeon. She trained other doctors and nurses. She served as an officer in the military. She fought in combat beside male soldiers.
It changed this policy in 1820, and made it more flexible, allowing colonists of any religion to settle in Texas (formerly settlers were required to be Catholic, the established religion of the Spanish Empire).