As a Member of the Parliament and a Federal Minister, Shagari led and was part of several Nigerian missions abroad. As Minister of Economic Development, he was a member of the Nigerian delegation to the Tangiers Conference of the U.N. Economic Commission for Africa (ECA) which was led by Minister of Finance Chief Festus Okotie Eboh. In 1961, he led the delegation to the tenth anniversary of Libya's Independence. The same year, he was at the GATT Ministerial conference in Geneva, where he raised the issue of European Economic Community's (ECC) discrimination against African countries like Nigeria who were not then, associated with EEC. The same year, he led a delegation to the Commonwealth Parliamentary Conference (CPA) in London. He became the chairman of the next CPA Conference held in Lagos between October–November 1962.