Byzantine art developed from Roman imperial art and never lost its classical influences. It is divided into four periods: Early, Middle (High), Period of Latin Occupation, and Late. During the Early period, Constantine built up Constantinople as the new capital and decorated it with statues and forums. Ivory carving and silver plates were also important art forms. Under Justinian I's rule, many churches were built or renovated in Constantinople and elsewhere. Mosaic art flourished beginning in the 4th century. In the 7th century crisis, art was produced outside the capital, including rebuilt churches. Veneration of icons not made by humans became significant. As the military situation improved in the 9