There are various sources which lie in this category and broadly these sources can be divided into:
1. Literary Sources
However, reconstruction of history of ancient past have numerous difficulties as sources for this period are limited and extremely diverse in nature. In the absence of proper literary records, our knowledge is largely based on archaeological sources. So for a better comprehension of past, evidences from literary sources has to be correlated through the cross-checking with the archaeological evidence.
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2. Literary Sources
4. Archaeological Dating Methods