Norway student visa requirements for nigerian citizens Business invitation. A business invitation letter from the sponsoring corporation during the place region. The letter must be printed on firm letterhead stationery, resolved to "The Consulate of Nigeria, Visa Area", and signed by a senior supervisor. The organization letter should adhere to https://www.quora.com/profile/Africred/7-Ways-Africred-is-Shaping-the-Education-Sector-in-Sub-Saharan-Africa-https-africred-org-https-africred-org-visa-a