The major organization through which Nigeria, pursues her economic, political and social interests' in West Africa is

The major organization through which Nigeria pursues her economic, political, and social interests in West Africa is the Economic Community of West African States (ECOWAS). ECOWAS is a regional intergovernmental organization established in 1975 with the goal of promoting economic integration among its member states in West Africa. Nigeria is a founding member of ECOWAS and has played a prominent role in the organization since its inception. ECOWAS has made significant strides in promoting regional trade and development, and Nigeria has been a key player in this process. Nigeria is the largest economy in West Africa, and its participation in ECOWAS has helped to foster economic growth and development in the region. In addition to its economic objectives, ECOWAS also has a political mandate, working to promote peace and stability in West Africa. Nigeria has played an active role in this area as well, participating in peacekeeping missions and supporting conflict resolution efforts in the region. Overall, ECOWAS is a vital platform for Nigeria to pursue its interests in West Africa and has played a significant role in promoting economic growth, development, and peace in the region.