Why did historian b mention the Boston massacre while historian a does not?

Historian B may mention the Boston Massacre to highlight its significance in galvanizing colonial opposition to British rule and to illustrate the escalating tensions between colonists and British authorities. In contrast, Historian A might choose to focus on different events or themes that align more closely with their narrative or argument, deemphasizing the Boston Massacre's role in the broader context of American Revolution. Each historian's selection of events reflects their specific analytical lens and the aspects of history they wish to emphasize.