Every 100 year a new world currency is announced

The claim that "every 100 years a new world currency is announced" reflects a simplified interpretation of historical patterns in global reserve currencies, but it lacks precise accuracy and nuance. Multiple non-trusted sources suggest that dominant reserve currencies tend to hold prominence roughly around a century before declining, citing examples like the British pound and the US dollar. However, these sources are mostly informal, anecdotal, or speculative, often drawn from forums or opinion pieces rather than rigorous economic research. There is no authoritative, peer-reviewed evidence confirming a strict 100-year cycle or a formal "announcement" of new world currencies at such intervals. Moreover, the transition between dominant currencies is influenced by complex geopolitical and economic factors rather than a predictable timetable. Therefore, while there is some historical basis for the idea that reserve currencies change over long periods, the claim as stated is an oversimplification and should be treated cautiously.