Answer:
Written sources. Some examples of primary written sources are contemporary letters, eyewitness accounts, official documents, political declarations and decrees, administrative texts, and histories and biographies written in the period that is to be studied. Written sources help in cross-checking data or information collected from oral and other sources of historical knowledge. This help to reach reliable conclusions. Documents provide more detailed information than oral sources, e.g. dates, illustrative pictures, names of participants in events
Explanation:
The Aztec Indians were a simple people. They relied on what they could grow and hunt as their primary food sources. Because it was easier to grow crops than to rely on animals, the Aztec diet was plant-based and focused on a few major foods. This diet provided the nutrients necessary to sustain life, but it is also a healthy way of eating that you use can as a model when designing your own nutritious eating plan.
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