By 1300 CE, Muslim traders arrived in the southern Philippines, bringing with them Islamic mythologies and its belief systems. Many natives in certain areas in the southern and western Philippines were converted into Muslims easily as much of the people had societies that had high acceptance towards foreign traditions. In the middle of the 16th century, the Spanish arrived and brought with them Christian mythologies and its accompanying belief systems. Some of the inhabitants were receptive to these myths, but most of which were against it as the Spanish wanted to conquer the lands and override their leaders, instead of simple tradition exchanges. When the Spanish laid its foundations in the archipelago, a three-century purge against indigenous religions began, which resulted in much of the ethnic people's indigenous cultures and traditions being brutalized and mocked. The phase also replaced much of the polytheistic beliefs of the people into monotheism. Existing myths and folklores were retrofitted to the tastes of the Spanish, but many indigenous belief systems were hard to replace, and thus, were retained despite Spanish threats and killings. During the Philippine revolution, there were attempts to revitalize the indigenous Philippine folk religions and make them the newly established state's national religion. However, the proposals were sideline due to conflicts with the Americans, which led to war. In the late 19th century, the Americans colonized the country and bolstered Westernization which included the conversion of more people into Christianity.