How are the accounts of foreign travellers useful to historians?

Accounts of foreign travelers provide historians with valuable insights into the cultures, societies, and economies of different regions during specific periods. These narratives often offer unique perspectives that may not be present in local sources, highlighting interactions between cultures and the effects of globalization. Additionally, they can reveal biases and perceptions that shaped historical relationships, enriching the understanding of historical contexts and events. Overall, such accounts help to construct a more nuanced and comprehensive view of history.