Swahili language
The exact number of Swahili speakers, be it native or second-language speakers, is unknown and a matter of debate. Various estimates have been put forward and they vary widely, from 50 million to over 100 million. Swahili serves as a national language of four nations: Tanzania, Kenya, Uganda, and the DRC. Shikomor, the official language in Comoros and also spoken in Mayotte (), is related to Swahili. Swahili is also one of the working languages of the African Union and officially recognised as a lingua franca of the East African Community. South Africa legalized the teaching of Swahili in South African schools as an optional subject beginning in 2020.
Sinhalese language
Sinhalese (), known natively as Sinhala (; "siṁhala" ), is the native language of the Sinhalese people, who make up the largest ethnic group in Sri Lanka, numbering about 16 million. Sinhalese is also spoken as a second language by other ethnic groups in Sri Lanka, totalling about four million. It belongs to the Indo-Aryan branch of the Indo-European languages. Sinhalese is written using the Sinhalese script, which is one of the Brahmic scripts, a descendant of the ancient Indian Brahmi script closely related to the Kadamba alphabet.