Complex sentence: Following the battles of Lexington and Concord on April 19,1775, the British army was besieged in the City of Boston.They were supported and supplied by the Royal Navy under the command of Vice-Admiral Samuel Graves, who was under Admiralty instruction to suppress the burgeoning rebellion.
Split into simpler sentences: Following the battles of Lexington and Concord on April 19,1775, the British army was besieged in the City of Boston. The British were supported and supplied by the Royal Navy under the command of Vice-Admiral Samuel Graves, who was under Admiralty instruction to suppress the burgeoning rebellion.