Complex sentence: Others believe that it started in Long Island, New York, while many in the Northeast still maintain that its roots can be traced to Garrett's Barber Shop in Berlin, CT, a popular shop and sub-cultural epicenter.
Split into simpler sentences: Others believe that it started in Long Island, New York. Many in the Northeast still maintain that its roots can be traced to Garrett's Barber Shop in Berlin, CT, a popular shop and sub-cultural epicenter.