The Neck (Isni)

The Neck is an important region of the continent of Mesoti.
The Neck has historically been extremely volatile, with many nations fighting over this terrain throughout history, hoping to secure a vital tradelink between the Carenthosian Sea and Ammillan Sea. 
The Neck is extremely rich in Copper Ore, as has proven extremely important, most noteworthy of which being the The Copper War. 
The Neck is not a unified region, instead being classically defined as being controlled by 6 distinct administrative regions in 4 different countries.