Simultaneously, the Christian kingdoms gradually emerged and developed their own styles; developing a pre-Romanesque style when for a while isolated from contemporary mainstream European architectural influences during the earlier Middle Ages, they later integrated the Romanesque and Gothic streams. There was then an extraordinary flowering of the Gothic style that resulted in numerous instances being built throughout the entire territory. The Mudéjar style, from the 12th to 17th centuries, was developed by introducing Arab style motifs, patterns and elements into European architecture.