David IV the Builder or the Restorer (also known as Davit IV Aghmashenebeli) was the king of Georgia from 1089 to 1125 CE. His long reign was marked by a substantial revival of medieval Georgia, he regained much of Georgia's lost territory and controlled a realm stretching from the Black Sea to the Caspian Sea at his death. David's religious, military, and cultural reforms stabilized domestic life in Georgia and established the monastery of Gelati as a major cultural center. It was under David IV that Georgia was unified for the first time in centuries.
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