Was and were are both simple past tense forms of the verb to be, but they are not interchangeable. Was is the regular singular simple…
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Your "you was" is a subjunctive statement, it's based on your idea of what you imagined or wished.
Thus your comment should have read, "you were quick to make......".
Bod plagiarised parts of an article to support his argument for compenstion for the drunken, destitute sailors that were press ganged.
He was careful to select only those parts that supported his view, and he omitted the parts that undermined his argument.