In history, it is rarely the case that there is a single cause of an event. There are often multiple causes and factors and motivations that all play into the unfolding of historical happenings. Reformation historian Roland Bainton said, "The sum of the matter is that causation is exceedingly difficult to assess. One can do no more than offer a plausible conjecture." Bainton believed there were causes of events in history, but that there could be much investigation and debate about the complexity of those causes. That's part of our work as historians -- to investigate different possibilities and theses and see which are the most likely factors in causing events to unfold as they did. And as we make our assessment of causes, we remain open to the possibility that new evidence might surface that will change our understanding of causes of what happened in the past.
The historians that came of age during the middle to late twentieth century tended to turn their attention toward : Social and cultural events and themes This refer to the period between 1960 - 1999. many of them refer to the events that happen before this as 'history from below'
Debating over gun rights can be viewed in different ways. Some of the people may be gun owners , against guns or victims. Reducing the issue of gun control to "pros" and "cons". hope this helps