The monarchy and the autocracy both have a head. The head is one of the powerful group. As they continue as leaders they would become a stronger group altogether. So basically one leader of the two groups that controls everything and is the most powerful one.
Septuagint, abbreviation LXX, the earliest extant Greek translation of the Old Testament from the original Hebrew.
Hope this helps
- - William the Conqueror was considered an important monarch because he took down/seized the throne to England.