When you will have constructed Embassy and you will log in the Facebook account, your friends from this social network who also play  ""Evolution"" (and who have Embassy on the base), automatically will appear in your Embassy. You will be able to send and receive gifts daily. 

When you improve Embassy, you will be able to receive time accelerators for victories of your friends. Each successful fight which is carried out by your friend will increase the score which current value is displayed in Embassy. When the counter reaches the specified size, you receive an award.