Write a Brief History of Trade Unions in Canada, in Building a Better World, by Errol Black and Jim Silver Chapter

Summary: Chapter 4: Creative Organizing and Determined Militancy: A Brief History of Trade Unions in Canada, in Building a Better World, by Errol Black and Jim Silver Chapter 5: Acting Politically, in Building a Better World, by Errol Black and Jim Silver Chapter 6: Facing the Twenty-First Century, in Building a Better World, by Errol Black and Jim Silver. Summarize please.