Original sentence: The United Kingdom has several organizations which are dedicated to improving motorcycle safety by providing advanced rider training over and above what is necessary to pass the basic motorcycle test.Whereas many social motorcycle organizations raise money for charities through organised events and rides, some other motorcycle organisations exist only for the direct benefit of others
Edited sentence: The United Kingdom has several organisations which are dedicated to improving motorcycle safety by providing advanced rider training over and above what is necessary to pass the basic motorcycle test.Whereas many social motorcycle organisations raise money for charities through organised events and rides, some other motorcycle organisations exist only for the direct benefit of others