Answer:
A historian who wants to determine if iron tools could be found in the ruins of an ancient African city would need to consult an expert in archaeology or an archaeologist. Archaeologists are skilled in excavating, studying and interpreting artifacts, structures, and other material remains of past human societies. They can examine the ruins and artifacts to determine the materials used to make those tools and can determine if iron tools were used by the ancient African city by analyzing the material composition and dating techniques of the tools found at the site. Therefore, the historian should consult an archaeologist to answer their research question.