Croatia, is a unitary democratic parliamentary republic at the crossroads of Central Europe, Southern Europe, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers 56,594 ;square kilometres (21,851 square miles) and has diverse, mostly continental and Mediterranean climates. Croatia's Adriatic Sea coast contains more than a thousand islands. The country's population is 4.28 million, most of whom are Croats, with the most common religious denomination being Roman Catholicism. Having joined on 1 July 2013, Croatia is the newest, 28th member state of the European Union. The Croats arrived in the area of present-day Croatia during the early part of the 7th century. They organised the state into two duchies by the 9th century. Tomislav became the first king by 925 AD, elevating Croatia to the status of a kingdom. The Kingdom of Croatia retained itsSee More