December 25th 1926 when his father (Emperor Taisho (Yoshihito)) died.
Military campaign to defeat all enemies and then he declared himself emperor.
a ruler of an empire usually china, rome, or Egypt
An emperor is head of a political entity which has people or territories under his authority.
The Byzantine Empire was ruled by over 100 men and women over numerous dynasties and 1,100 years, beginning with Constantine I the Great in 330 CE and ending with Constantine XI Palaiologos in 1453...