Generally speaking, it would be that "D. European states had their borders clearly defined" that was an important outcome of the Congress of Vienna, since this increased stability in Europe after the Napoleonic Wars.
Salutary Neglect was when Britain left the colonies alone from 1714-1763 after the Glorious Revolution where William and Mary came to power in England.
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A group of protesters, led by Revolutionary War veteran Daniel Shays, began a 6 month rebellion by taking over the Court of Common Pleas in Northampton; James Bowdin, the governor of Massachusetts, was clearly in the latter group.
Without suffering of.....