The great Hungarian plain is covered by Tertiary and Quaternary deposits, through which rise the Bakony-wald and the Mecsek ridge near Pecs (Funfkirchen).
Coal is extensively mined in the region of Budapest-Oravicza, Nagybanya, Zalatna, at Brennberg near Sopron, at Salgo-Tarjan, Pecs, in the counties of Krasso-Szoreny, and of Esztergom, and in the valley of the river Zsil.
During the six following years the sultan still further improved his position, capturing, amongst many other places, Pecs, and the primatial city of Esztergom; but, in 1547, the exigencies of the Persian war induced him to sell a truce of five years to Ferdinand for £100,000, on a uti possidetis basis, Ferdinand holding thirty-five counties (including Croatia and Slavonia) for which he was to pay an annual tribute of £60,000; John Sigismund retaining Transylvania and sixteen adjacent counties with the title of prince, while the rest of the land, comprising most of the central counties, was annexed to the Turkish empire.
Towns, most of them also the sees of bishops, now sprang up everywhere, including Szekesfehervar (Stuhlweissenburg), Veszprem, Pecs (Fiinfkirchen) and Gydr (Raab).
Between 1362 and 1450 no fewer than 4151 Magyar students frequented the university of Vienna, nearly as many went by preference to Prague, and this, too, despite the fact that there were now two universities in Hungary itself, the old foundation of Louis the Great at Pecs, and a new one established at Buda by Sigismund.