During those years, the United States evolved from a new nation fighting Great Britain for independence (1775â83), through the monumental American Civil War (1861â65) and, after collaborating in triumph during World War II (1941â45), to the world's sole remaining superpower from the late 20th century to present.
Tracheotomy (US /ËtreÉªkiËÉtÉmi/ tray-kee-AW-tÉ-mee) is a surgical procedure which consists of making an incision on the anterior aspect of the neck and opening a direct airway through an incision in the trachea (windpipe).
tracheostomy - a surgical operation that creates an opening into the trachea with a tube inserted to provide a passage for air; performed when the pharynx is obstructed by edema or cancer or other causes