How does one's viewpoint, or social viewpoint, affect they way history and events and can be recorded?
A person's (or a society's) own particular viewpoint cannot help but affect the way that history and events are recorded. People tend to record history in ways that fit with what they want or need to think about themselves and the world.
As an example of this, history textbooks from decades ago tended to portray Native Americans as savages who were in the way of progress. This was because Americans wanted to portray themselves as the bringers of civilization. Nowadays, textbooks tend to emphasize Native Americans as more of noble people who lived in harmony with their environment. This is because the people who write most texts are people who feel that Americans need to be more protective of the environment.
In this way, the point of view of the person or society that records the history has a great deal to do with how that history is recorded.