Final answer:
Margaret Sanger's education efforts regarding birth control were primarily aimed at lower-income families and immigrant communities, aiming to empower women with control over reproduction and improve living standards amid social and economic changes.
Step-by-step explanation:
Margaret Sanger's initial efforts to educate the public about birth control were primarily aimed at lower-income families and immigrant communities. Sanger, who was a pioneer in advocating for reproductive rights and was the founder of Planned Parenthood, believed that providing birth control information and services would help those in poverty better manage the size of their families and improve their standard of living. This focus was partially because wealthier women typically had discreet access to birth control services. Despite facing arrests and the challenges posed by the Comstock Laws, she opened a women's clinic that distributed diaphragms and fought for the right to disseminate information about birth control, which she argued was crucial for women's health and social status.
In the context of changing social dynamics during the early 20th century, with more women entering the workforce and technological advances simplifying household labor, the work that Sanger did was revolutionary. It contributed to a cultural shift where the economy and expectations from women were evolving. Sanger's outreach was particularly significant in empowering women to have more information about and control over reproduction, challenging the social norms of the time.