Complex sentence: When John of Gaunt died in 1399, Richard disinherited Henry of Bolingbroke, who invaded England in response with a small force that quickly grew in numbers and, meeting little resistance, he deposed Richard to have himself crowned Henry IV of England.
Split into simpler sentences: When John of Gaunt died in 1399, Richard disinherited Henry of Bolingbroke, who invaded England in response with a small force that quickly grew in numbers. Meeting little resistance, Henry deposed Richard to have himself crowned Henry IV of England.