Answer:
The Georgia Military.
Explanation:
The Cherokee Phoenix's last issue was posted on May 31, 1834, shortly before the Georgia militia seized the press. In 1838−39, the Cherokees were forcibly removed to Oklahoma along what became known as the Trail of Tears; an estimated 4,000 members of the tribe died on the forced march. Therefore the enemies he was reffering to was the Georgia Military.
It changed by everything going cruel and alarmed.
He believed it would help the cause of freedom and peace