This command colonizes the specified province for your current country. The colonized province will become a core with the province's original characteristics (like religion and culture).
colonize [province id]
|Province ID||The ID of the province you wish to colonize for the country you are currently playing as.|
Berlin's province ID is 50. This command will colonize Berlin for the country you are currently playing as.
The province ID of Prague is 266, this command would colonize Prague for your current country.