One of the most important causes for the fall of the Maya was the presence of widespread drought in the region. Mayan religion depicts the leader of a city-state as having a direct connection to the gods and, as such, that leader is responsible for the well-being of the people. However, a long period of drought strained this concept of kingship. Instead of being able to provide, leaders found their people starving due to drought and the people began to doubt and question their leaders' rule. In that sense, the droughts in Mesoamerica were the prime cause of the civil strife that impacted the fall of the Mayan city-states.
A newspaper article written during a historical event could be called a primary source document. Primary sources in journalism are sources that are written by an author with direct knowledge of the event or topic that is being written about such as a current event.
This court case challenged the fact that black and white students could not share schools. The outcome was that "seperate but equal" segregation was not equal when it came to public education.