Complex sentence: Hesselius left his home country of Sweden for Wilmington, Delaware in 1711 where he lived until 1717 when he moved to Philadelphia, Pennsylvania, where he lived until 1721.
Split into simpler sentences: Hesselius left his home country of Sweden for Wilmington, Delaware in 1711. There he lived until 1717 when he moved to Philadelphia, Pennsylvania, where he lived until 1721.