Original sentence: Some chieftains took the event as a chance to show impressive forces and thus disprove allegations about the Highland clearances, but the decimation of their tenantry rather undermined this.Soon after the Act's repeal in 1782, Highland aristocrats set up Highland Societies in Edinburgh and other centres including London and Aberdeen, landowners' clubs with aims including "Improvements" (which others would call the Highland clearances) and promoting "the general use of the ancient Highland dress" by obliging members to wear this when attending meetings
Edited sentence: Some chieftains took the event as a chance to show impressive forces and thus disprove allegations about the Highland Clearances, but the decimation of their tenantry rather undermined this.Soon after the Act's repeal in 1782, Highland aristocrats set up Highland Societies in Edinburgh and other centres including London and Aberdeen, landowners' clubs with aims including supposed "Improvements" (the devastating Highland Clearances) and promoting "the general use of the ancient Highland dress" by obliging members to wear this when attending meetings