MLAD BOLESLAV

German Jungbunzlau, city, Stredocesk kraj (region), Czech Republic. It lies northeast of Prague, at the confluence of the Jizera and Klenice rivers. Occupied in 995 and founded as a city in 1334, it was a centre of the Bohemian Unitas Fratrum (Unity of Brethren) Protestant group in the 16th century. It has a 15th-century cathedral, a Brethren church (1554), a castle, and other landmarks. The town grew rapidly after a new automobile plant began production there in 1964. Mlad Boleslav also produces tractors and other agricultural machinery. Pop. (1991 prelim.) 44,471.