The influence of different stylistic traditions that can be seen in the Treasury of Petra reflects the - vast reach of the Nabatean empire, which united various countries that had different traditions - repeated conquest of the Nabateans by different countries, resulting in the adoption of foreign traditions - adoption of a new religious belief system by the Nabateans, resulting in the replacement of older traditions - central role that long-distance trade played in Nabatean society, resulting in exposure to other cultures