They are recognised as capitals as a matter of convention, and because all or almost all the country's central political institutions, such as government departments, supreme court, legislature, embassies, etc., are located in or near them.
Kota-kota tersebut diakui sebagai ibu kota berdasarkan konvensi dan karena semua atau hampir semua lembaga politik pusat negara, seperti departemen pemerintah (kementerian), mahkamah agung, badan legislatif, kedutaan besar, dan lain-lain berada di dalam atau di dekatnya.