In 1984, Morgan, together with the late Simone de Beauvoir of France, and women from 80 other countries, founded The Sisterhood Is Global Institute (SIGI), an international non-profit NGO with consultative status to the United Nations, which has for three decades functioned as the world’s first feminist think-tank. The Institute has played a leading policy-formulation, strategic, and activist role in the evolution of the international Women’s Movement. SIGI has also developed a global communications network through which an umbrella of NGO interest, advice, contacts, and support is collectively mobilized to empower the global women’s movement.