A likely explanation would be that there was not enough food available for the entire growing civilization at the time, and that the people of the civilzation moved around and were eventually dissolved into different cultures,
Answer:
By offering different perspective.
Explanation:
Popular historical events, tend to be written from the perspective of the 'Winners'. Even if those winners were doing something unethical during the events, they can cover it by justifying their actions through some sort of divine will or missions.
The perspective from non-European histories offered a different perspective on the colonization.
In the past, colonization's were generally praised as something good. The Europeans masked it as some sort of mission to help other countries in the world improve their civilization. But, they didn't mention the dark side of it. Only after examining non-European histories the world aware of the human exploitation, resources exploitation, and the military's conflicts that's caused by the colonization.
The president uses mass media to gain support for policies.
