The Roman Empire was founded by the twin brothers Romulus and Remus, who at birth were placed in a basket and set afloat on the river Tiber. The basket came aground at the grotto Lupercal, under a fig tree called Ruminal, where the twins were found and suckled by a she-wolf, and later raised by the shepherd family of Faustulus and and his wife, Acca Larentia.
As young men, these two decided to found a city (ie. Rome). After studying the local bird migratory patterns and stars in the night sky, they determined that they would each govern a section of this city. Romulus would get 2/3 while Remus would run the other 1/3.
After a while, Remus got a little tetchy at this agreement, and jumped across into his brother's section. Since Remus did not have the appropriate paperwork, Romulus gave him a dirt nap.