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.
Pipil language
The exact number of speakers has been difficult to determine because persecution of Pipil speakers throughout the 20th century (massacres after suppression of the 1932 Salvadoran peasant uprising, laws that made speaking Nawat illegal) made them conceal their use of the language. (About 30,000 people were killed during the uprising over the course of a few weeks, and those who spoke Nawat outside their homes against the new rules "provoked shame and fear." A young Nawat language activist, Carlos Cortez, explained in 2010 that this fear is worse for older speakers.)