| February 2015 |
| 23/02/15 | The alliance Cz&Sk (today: Cz&Sk) was founded. |
| Founding members::  Rembrandt and CzechLam. |
|  The alliance reaches a population more than 100. |
|
| 24/02/15 | Joining of:Nationalists. |
|
| 25/02/15 | Joining of:TomTomSvk. |
| Leaving of:TomTomSvk. |
| The alliance reaches a population more than 1,000. |
| March 2015 |
|
| 13/03/15 |  The alliance have their first conquest. |
|
| 15/03/15 | The alliance reaches a population more than 5,000. |
| April 2015 |
|
| 03/04/15 | The alliance reaches a population more than 10,000. |
|
| 07/04/15 | The alliance has done over 5 conquests. |
|
| 10/04/15 | Deletion of:Nationalists. |
|
| 26/04/15 | The alliance has done over 10 conquests. |
| May 2015 |
|
| 13/05/15 | Leaving of:Rembrandt. |