Final answer:
Hungary was founded by the crowning of King Stephen I in 1000 and became independent in 1918 after the dissolution of the Austro-Hungarian Empire.
Step-by-step explanation:
The country that was founded by the crowning of King Stephen I in the year 1000 and then became independent in 1918 was Hungary.
King Stephen I, also known as Saint Stephen, was the first king of Hungary and played a vital role in the establishment of the Kingdom of Hungary. His crowning in the year 1000 marked the official foundation of the Kingdom.
However, Hungary lost its independence and came under Austro-Hungarian rule in the 16th century. It regained its sovereignty and became fully independent in 1918 following the dissolution of the Austro-Hungarian Empire after World War I.