The answer is D. He delivered his speech during the March on Washington.
Ending the institution of slavery
Negotiation between union leaders and business management is called : Collective bargaining
in collective bargaining, the union leaders and business management usually talked about the more acceptable condition for the workers that would benefit both parties
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It was mainly the "C. Imperial nations, such as the United Kingdom and France," that benefited most from 19th-century imperialism, since these were the nations that were extracting the resources from the colonies.
He was associated with the signing of the Declaration of Independence. Was known for his large Signature.
