Which statements correctly describe the Ottoman Empire? Choose all answers that are correct.
A. The empire expanded because of its well-disciplined, well-equipped, and well-trained army.
B. Most of the people of the Ottoman Empire were Sunni Muslim.
C. Osman signed peace treaties with the Safavid Empire because both populations were part of the same branch of Islam.
D. Known as Süleyman the Magnificent in Europe, this leader was known by his own people as "the Lawgiver."
E. The empire was founded by Constantine in the sixth century.