Complex sentence: Three American vessels, independently operating from Charlestown, Philadelphia and Newport, sailed to Bermuda, and on 14 August, 100 barrels of gunpowder were taken from the Bermudian magazine, while Governor George James Bruere slept, and loaded onto these vessels.
Split into simpler sentences: Three American vessels, independently operating from Charlestown, Philadelphia and Newport, all headed to Bermuda. On 14 August, 100 barrels of gunpowder were taken from the Bermudian magazine, while Governor George James Bruere slept, and loaded onto these vessels.