I enjoyed reading The Verge by P. Wyman https://www.amazon.com/Verge-Reformation-Renaissance-Forty-Y...

It describes changes that happened in war, mining, shipping, trade in (mostly western) Europe in the last decades of XV century. The common theme is finance and it includes a chapter on how bank houses became bigger and could secure much bigger loans (which allowed bigger states to wage wars, or rich individuals to bid for top titles ;)).

Fun read.

Welcome to MMXXII. About X centuries ago "we" imported the Hindu-Arabic numerals. I know, Latin numbers carry the myth of being more "safe" but really you should try the arabian numerals. They revolutionized math and eased reading text alongside. thumbs-up

It's a convention to use roman numerals for centuries in some european countries. Parent poster probably just done it out of habit.

Thanks, I wasn’t aware it is not a “global” convention and wasn’t sure what does the parent make fun of.

One learns every day :) I will be more careful about this when writing centuries in English the next time.

Also this poster on quora have a detailed list https://www.quora.com/Why-do-we-write-century-numbers-with-I...

A 1914 English translation of his 1499 Italian books from archive.org:

https://archive.org/details/ancientdoubleent00geij

The Medici family supposedly invented it. Very fascinating family.

https://bigthink.com/culture-religion/how-the-medici-family-...