Good question! These historical quandaries are a large part of what makes numismatics so interesting to me.
The climate of industrialization and expanded commerce between nations had made apparent the need for more uniform systems of measurement and currency for quite awhile. Beginning with France, USA, and continuing with Spain and her former colonies in the Americas (most of which had become their own nations by the 1820's) the urgent need for decimalization of both measurement systems and coinage was recognized by many countries in the 19th century. By the 1840's most countries had either implemented decimalization or were considering it in legislation or committee. Such changes in governmental regulations always take time. Some countries likely took longer than others. I'm no expert on the coinage history or legislation of Mexico. However, I would consider it more likely the timing you mention was coincidence rather than precise coordination.
One way to find out more would be to review legislative documents from that period. If you were so inclined, you could see if you can find an online portal for Mexico's archives and search finance dept documents leading up to that time.
Hope this helps!
The climate of industrialization and expanded commerce between nations had made apparent the need for more uniform systems of measurement and currency for quite awhile. Beginning with France, USA, and continuing with Spain and her former colonies in the Americas (most of which had become their own nations by the 1820's) the urgent need for decimalization of both measurement systems and coinage was recognized by many countries in the 19th century. By the 1840's most countries had either implemented decimalization or were considering it in legislation or committee. Such changes in governmental regulations always take time. Some countries likely took longer than others. I'm no expert on the coinage history or legislation of Mexico. However, I would consider it more likely the timing you mention was coincidence rather than precise coordination.
One way to find out more would be to review legislative documents from that period. If you were so inclined, you could see if you can find an online portal for Mexico's archives and search finance dept documents leading up to that time.
Hope this helps!


















