A cooperative ("coop") or co-operative ("co-op") is an autonomous association of people who voluntarily cooperate for their mutual social, economic, and cultural benefit. Cooperatives include non-profit community organizations and businesses that are owned and managed by the people who use their services (a consumer cooperative) or by the people who work there (a worker cooperative) or by the people who live there (a housing cooperative), hybrids such as worker cooperatives that are also consumer cooperatives or credit unions, multi-stakeholder cooperatives such as those that bring together civil society and local actors to deliver community needs, and second and third tier cooperatives whose members are other cooperatives.The International Co-operative Alliance was the first international association formed by the movement. It includes the World Council of Credit Unions. A second organization was formed later in Germany, the International Raiffeisen Union. In the United States, the National Cooperative Business Association (NCBA) serves as the sector's oldest national membership association. It is dedicated to ensuring that cooperative businesses have the same opportunities as other businesses operating in the country and that consumers have access to cooperatives in the marketplace. A U.S. National Cooperative Bank was formed in the 1970s. By 2004, a new association focused on worker co-ops was founded, the United States Federation of Worker Cooperatives.