Upon reaching Level 10, a Town unlocks the Ambassador Citizen. The Ambassador is where all diplomatic treaties are crafted, reviewed, and received - so this Citizen will be your lifeline to Diplomacy. (It's important to note that if your Nation trades away its last Level 10 or higher Town, you won't be able to take part in Diplomacy until you once again control a Town with an Ambassador.)

To get started, simply speak with your Ambassador and go to the Manage Diplomatic Relations menu. From there, you'll be able to access the following:

• Write a Proposal - From here, you can write treaty proposals to send to other Nations. More detail on how this works below.
• View Proposals - From here, you can accept or reject incoming treaty proposals, as well as view your pending outgoing proposals.
• Nation Status - From here, you can check the status of your Nation's active treaties.
• Global Status - From here, you can check the status of all other Nation's active treaties.
• Diplomacy Info - From here, you can learn more about how Diplomacy works through the in-game help menu.