Which organization most likely has the greatest impact on Asian countries?

The Asian Development Bank (ADB) most likely has the greatest impact on Asian countries. Established to promote economic and social development, the ADB provides financial assistance, technical expertise, and policy advice to its member countries. Its focus on infrastructure development, poverty reduction, and sustainable growth significantly influences regional development and economic stability. Additionally, the ADB collaborates with various stakeholders, enhancing its capacity to address pressing issues in the region.