The factor that is not considered a factor of decline is the reunification of the Roman empire. During Diocletian’s rule, it was created a <em>tetrarchy</em> - a form of government that divides power between four individuals, two rulers in the east and two rulers in the west - Galerius and Constantinus. The Tetrarchy made the government gain control again of the Roman empire for some time, but later it turned into a confusion because of the <em>lack of a single authority</em>. When Constantine came to power - he inherited the West Empire from his father, the tetrarchy was abolished, and the Roman empire again was unified under a single ruler - Constantine.
Hey there. Gilbert du Motier, Marquis de Lafayette, was certainly not known for your choices C. and D. (Lexington and Concord), neither B. (Bunker Hill).
However, Lafayette is known for assisting GEN. George Washington and ADM. Francois de Grasse at the Battle of Yorktown (B.). At the Battle of Yorktown, these brave leaders and their men surrounded British General, Sir Cornwallis, and that marked the end of the American Revolutionary War.
The Florida Purchase Treaty.