I suppose you are right about the history of firearms. However, the novel was written in 1844, more than 200 years after the time in which it is set. Which makes me wonder if the author (Alexandre Dumas) knew and cared about the historic facts.

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Tuna-Fish an hour ago | parent | next [-]

Dumas was meticulously accurate, not to the world as it historically existed, but to how the French upper classes felt and wrote about. He was extremely well read in people's memoirs and diaries, and wrote his stories set in the world as the French aristocracy imagined it existed.

I believe he got this detail right in both ways; in that firearms were the most important weapons, and also the main characters would have done their very best to ignore that fact.

	▲	gtech1 5 minutes ago \| parent \| next [-]
		One thing that always bothered me was his use of currency. In the French original he mentions at least 5-6 types of currency and it seems they all have common sub-divisions, despite some of them being Spanish or even Italian. Was France using other people's currrncy back then ?
	▲	WillAdams 44 minutes ago \| parent \| prev [-]
		For more on this, see the (sadly, hastily researched to some degree) biography of his father, _The Black Count_: https://www.goodreads.com/book/show/13330922-the-black-count which arguably served as a template for a famous novel which also features a count in the title.

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fifticon an hour ago | parent | prev [-]

above all, I believe he cared about getting the next draft ready for each week / before deadline, and then about keeping the cliffhanger suspense high, to keep his fish on their hooks.