The development of a two-party system did not result from A. the selection of presidential candidates from "the Virginia Dynasty."
The two-party system, which started with the Federalists and the Anti-Federalists, continued to develop until during the controversial presidential election of 1824 between John Quincy Adams and Andrew Jackson.
The two-party system developed over concerns over the abolition of slavery, voting of virtuous candidates, and the financial crisis of 1819.
Thus, the selection of presidential candidates from "the Virginia Dynasty" did not develop the two-party system in the US.
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