Entrepot

A trading or market center

Incursions

An aggressive entrance into foreign territory; a raid or invasion

Sovereign

One that exercises supreme, permanent authority, especially in a nation or other governmental unit, as: A king, queen, or other noble person who serves as chief of state; a ruler or monarch.

Fiefdom

Something over which one dominant person or group exercises control

nouveau riche

One who has recently become rich, especially one who flaunts newly acquired wealth