Complex sentence: Rievaulx Abbey became one of the greatest and wealthiest in England, with 140 monks and many more lay brothers, receiving grants of land totalling 6,000 acres (24 km²) and establishing daughter houses in England and Scotland.
Split into simpler sentences: Rievaulx Abbey became one of the greatest and wealthiest in England with 140 monks and many more lay brothers. It received grants of land totalling 6,000 acres (24 km²) and established daughter houses in England and Scotland.