When did gold become a part of the federal coinage system?
Excuse me, but could you elaborate on the historical context surrounding the integration of gold into the federal coinage system? Specifically, I'm curious to know when this significant event occurred and what motivated its inclusion. Did it happen during a particular era of economic expansion or perhaps in response to a financial crisis? I'm interested in understanding the broader picture and the implications of this transition on the monetary system and the economy as a whole.