- South Sudan (Wikipedia)
South Sudan (/suːˈdɑːn, -ˈdæn/), officially the Republic of South Sudan, is a country in East Africa which is bordered by Ethiopia, Sudan, the Central African Republic, the Democratic Republic of the Congo, Uganda and Kenya including the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal, meaning “Mountain Sea”. It is a landlocked country. The population is nearly 12.7 million people in 2024, and Juba is the capital and largest city. South Sudan gained independence from Sudan on 9 July 2011, making it the most recent sovereign state with widespread recognition as of 2024.
- Ptolemy (Wikipedia)
Claudius Ptolemy (/ˈtɒləmi/; Greek: Πτολεμαῖος, Ptolemaios; Latin: Claudius Ptolemaeus; c. 100 – c. 170 AD) was a Roman mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importance to later Byzantine, Islamic, and Western European science. The first is the astronomical treatise now known as the Almagest, although it was originally entitled the Mathēmatikē Syntaxis or Mathematical Treatise, and later known as The Greatest Treatise. The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the Apotelesmatika (lit. “On the Effects”) but more commonly known as the Tetrábiblos, from the Koine Greek meaning “Four Books”, or by its Latin equivalent Quadripartite.