Explanation:

Asian Development Bank (ADB)

ADB is a regional development bank that came in existence on December 19, 1966. It has its headquarter in Philippines. ADB maintains 31 field offices across the world. It seeks to promote social and economic development in Asia. Members of the United Nations Economic and Social Commission for Asia and the Pacific (UNESCAP) as well as non-regional developed countries can take the membership of bank. It started its functioning with 31 members but now has 68 members.