Early Indonesian culture was influenced by foreign cultures due to its location along trade routes between India and China. Tools from the Bacson-Hoabinh culture found in Indonesia indicate influence from Vietnam between 1,500-500 BC. The Dongson culture from Vietnam between 1,500-500 BC also significantly impacted Indonesia, seen through bronze artifacts featuring Dongson patterns. Indian culture further influenced Indonesia through trade, spreading aspects of Hinduism-Buddhism, royal government, and literary/artistic traditions. Over time, these foreign influences blended with native Indonesian culture in a process of cultural exchange and integration.