What year was anesthesia developed?

Anesthesia began to be developed in the mid-19th century, with significant advancements occurring in the 1840s. The first successful demonstration of ether anesthesia was performed by William Morton in 1846. This marked a pivotal moment in surgical history, as it allowed for pain-free surgeries and revolutionized medical practices. Other anesthetics, such as chloroform and nitrous oxide, were introduced shortly thereafter.