TD — Chad

Chad is a large landlocked country in north-central Africa, spanning the Sahara Desert in the north, the Sahel in the center, and more fertile regions in the south around Lake Chad. N'Djamena, the capital, sits at the confluence of the Chari and Logone rivers near the Cameroonian border. Chad is bilingual with Arabic and French as official languages, reflecting its position bridging North and Sub-Saharan Africa. The country uses the Central African CFA franc (XAF). For developers, the TD country code (from the French 'Tchad') maps to ar-TD and fr-TD locales, requiring bidirectional text support for Arabic alongside Latin-script French. The .td domain serves Chadian web presence, and the +235 calling code is used for Chadian telecommunications. Chad's dual-script requirement — Arabic RTL and French LTR — makes it an important edge case for testing bidirectional layout implementations in web and mobile applications.