The woman who opened the first birth-control clinic in the united states was .

The correct answer is "Margaret Sanger".

Margaret Sanger was an American Nurse, sex educator, and birth control activist. She is known for having introduced the term  "birth control". In 1916, Sanger inaugurated the country's first birth control clinic. She would be later arrested for distributing information on contraception. She strongly believed that the best way to avoid abortion was with the use of contraception.