Empires

[JohnJohnson68]

Kingdoms become empires after expanding on two different continents, with the newly gained influence emperors would gain a slight bonus to their realm buffs along with newly exclusive empire only buffs for example:
Adding a bonus percentage to the quality of marine animals such as orcas,seals and cachalots.
Adding a bonus percentage to the quality of mountain dwelling animals such as mammoths, wolves, goats.
An ability to stall challenges for a way longer period of time.
A combat themed realm buff that focus on boosting agility, marksmanship, ua and mc.

To balance this the upkeep of empires would be much larger demanding way more effort the keep them running.