Final answer:
Integrating primary and secondary sources helps to provide a comprehensive understanding of the historical context and the complexities of interpreting history.
Step-by-step explanation:
The Polo and Africanus selections in the source feature are influenced by integrating primary and secondary sources. The primary sources, such as textual primary sources or non-textual sources like art or physical objects, provide firsthand accounts or direct evidence related to the historical events discussed. On the other hand, secondary sources, such as historiographical debates or side-by-side primary source readings, offer different interpretations and perspectives on the same events. By integrating these two types of sources, students can gain a more comprehensive understanding of the historical context and the complexities of interpreting history.