Which information is most to identify the social context of this speech? a) 1963; lincoln memorial during the march on washington for jobs and freedom, delivered to over 250,000 civil rights supporters b) 1861; lincoln memorial during the march on washington for jobs and freedom, delivered to over 250,000 anti-slavery supporters c) twenty-first century; americans supporting continued freedom and racial equality delivered to over 250,000 democrats and republicans d) 1963; lincoln memorial during the march on washington for jobs and freedom, delivered to over 250,000 african americans from new york and mississippi.