Explanation: As indicated by the legend, there is a Buddhist stupa and a Muslim mosque in the city. Recall that Buddhism and Islam made their way to Indonesia during the period 600–1450 (C) E. via trade routes. Eliminate (A) because the caliphates did not control Indonesia. Eliminate (C) because the crusaders did not reach Indonesia. Eliminate (D) because the Mongolians did not succeed in their invasion of Java. Choice (B) is the best answer.