Lazorus -> You are correct just 10k of each resource and 250 workers and 250 warriors is all that is required to build a city HOWEVER camelot kid is right before you can get your second city you must have attained the title knight which DOES require 10 cross medals and 5 rose medals. When you follow the guide you will also meet the requirements to attain the lords package and newbies package. These packages give you the medals needed to reach the title of Knight.