These documents are fairly simple to get. You can get them as rewards for completing tasks, unlocking achievements, and regularly playing the game. You can also get them as gifts from your friends.
How do you expand land in megapolis?
Megapolis is subdivided into regions and locations. The size of each of the regions can be expanded. Whenever there is an option to expand your territory, you will see arrows on the neighboring plots of land. They will show you in which direction and by how many cells you can increase the size of your city.
