The commune movement started in the 10th century , with a few earlier ones like Forlì -LRB- possibly NUMBER@1 -RRB- , and gained strength in the 11th century in northern LOCATION@1 which had the most urbanized population of LOCATION@2 at the time .

The commune movement started in the 11th century in northern LOCATION@1 which had the most urbanized population of LOCATION@2 at the time , and in what is now LOCATION@3 which was also relatively urban at the time .
