Final answer:
The book "Homegrown Terror" is about Major Benedict Arnold, who became known as a patriot-turned-traitor after his involvement in the burning of New London during the American Revolutionary War.
Step-by-step explanation:
The book "Homegrown Terror" documents the actions of Major Benedict Arnold, a patriot-turned-traitor, and the burning of New London. Benedict Arnold's initial contributions to the American Revolutionary War, such as the capture of Fort Ticonderoga, were overshadowed by his later treason. His attempt to take Quebec failed, and after being promoted and given other commands, his personal conflicts led to his betrayal of the American cause. Notably, he planned the burning of New London, an act that marked his complete turn away from the patriot forces he once served.