Original sentence: His books are based on evidence available in archives and recorded during frontier times, and have been instrumental in overturning previously held views prevalent in the late 20th century that settlement was peaceful.In more than ten books and numerous academic articles Reynolds has explained the high level of violence and conflict involved in the colonisation of Australia, and the Aboriginal resistance to numerous massacres of indigenous people
Edited sentence: His books are based on a vast stock of evidence, available in archives and recorded during frontier times, and have been instrumental in overturning previously held views prevalent in the late 20th century that settlement was peaceful.In more than ten books and numerous academic articles Reynolds has demonstrated the results of his meticulous research and explained the high level of violence and conflict involved in the colonisation of Australia, and the Aboriginal resistance to numerous massacres of indigenous people