Because of Marie Antoinette I think
It happened because the market was oberbought
Under a monarchy, the power to make political decisions is in the hands of one person, usually called a King or Monarch.
- Constantine became a Christian and stopped persecuting them.
- Constantine decided to move to Byzantine which he then changed to Constantinople.
Because of these two changes, the empire that led by Constantine became the largest empire that spread Christianity throughout the world. Until today, the residual of Constantine's empire still used as the center of traditional Christian culture in the world (vatican city)