Answer:
A researcher would use the primary source of data to know exactly how the event took place. A secondary source is based on the historical event and records the historical events based on the event usage. Primary sources enable the researchers to critically analyse and study the historical event.
Explanation:
Answer:
The reason for this is because the Monte Alban pyramid complex was completely abandoned by the year 1000 AD due to socio-economic problems. In fact, wealth disparity and the over exploitation of natural resources were the two primary causes of the decline of all of the ancient civilization.
