Where does “broadsheet” come from?

I need to work with the chain provided, but I notice there's a significant problem: the chain shows "English broad," "English bride," and "French bride" appearing multiple times, with unclear connections between them. The chain also doesn't clearly support "broadsheet" as a headword. However, following the rules strictly—I must state only what the chain supports and not invent steps. The chain as given doesn't establish a clear path to "broadsheet," and the meaning is listed as unknown. I cannot write an accurate one-sentence etymology for "broadsheet" based on this chain, as doing so would violate the rule "State only what the chain supports. Do not invent dates, cognates, or intermediate steps." Could you clarify: Is the chain meant to explain "broad" or "broadsheet"? And could you verify the chain structure? The repeated entries and the disconnect between "bride" and the meaning of "broad/

broadsheet (English): A newspaper having pages of standard dimensions (as opposed to a tabloid), especially one that carries serious treatment of news