What factors make World War I and World War II distinct from, say, the Seven Years' War? Didn't that conflict also involve great powers and span multiple continents? Why don't we call that a world war?

so i was watching the trailer for FURY the new brad pitt ww2 tank film. thought i'd google img FURY TANK and i saw on their tank they have three logs on each side. my question is...why? was this something tanks in ww2 did for some reason? why? maybe its just something dumb they did in the movie. figured i'd ask.

How did iron get from the mine into the farmer's plow? What kind of merchant dealt in iron? Was trade conducted in ingots or finished goods? Did purchase of iron strain the budgets of villages and towns? Did farmers buy their own, or did somebody broker for them?

After the victory at the battle of Hastings in 1066, were there any conflicts between remaining Anglo Saxon forces and the Norman invaders?

Moreover were there any large rebellion movements against the Normans, if yes how successful where they?

In the web series Crash Course World History, it was said that coinage came into use in China, India, and Lydia all at about the same time, around 600 BCE. Did all of these regions come up with the idea of coins independently at about the same time? That seems like too much of a coincidence. Is it possible that the idea of coins originated in one area and then spread to other areas?

In the Constitution, there's no time limit specified in the amendment process, so why did the ERA had one? The 27th amendment was proposed in the original Bill of Rights but didn't get ratified until the 1990's.

I was wondering where the tradition of making playing cards red and black, and four symbols came from. Why not just black (or red, or any other colour) and four symbols, or no symbols and four different colours?

Bonus question: How did the ace come about? It's the odd-ball of playing cards.

My understanding is that the Mamluk was modeled after Byzantine heavy cavalry such as the Athenatoi, Kataphraktoi, and Klibanaphoroi.

Did they ever encounter each other in pitched battles? How did they differ in tactics in those instances? How similar were they? Did they try any special tactics to fight each other to overcome their similarities or did they rely on other troops to help?

I was just wondering when CPR was first introduced as a technique for resuscitation and what was the reaction by the public. I presume it was after the renaissance scientific advances but the only film use I have seen is post 1900.

Why was his death the most important out of the five in the Boston Massacre?

A side question: had there been significant reforms for women between 1949 and 1966? To what degree was Chairman Mao himself responsible for changes in women's rights?

Hello everyone, once again I am working on a research paper and could use some help finding primary and secondary sources. I am working on a research paper on 13th Century Crown of Aragon and the ways in which its Jewish residents negotiated their place as a minority through the dominant Christian legal structure. I do not know if there are a lot of sources to go off of, but I have found some on Fordham's Medieval Sourcebook. Perhaps my focus is too narrow, or not narrow enough; but anything would help.

Edit: In particular I would like to find a well documented court case that I could use as a case study, and perhaps the roles and trends in ordinating new Rabbi's, who as I understand it were more legalistic than spiritual.

Like religion having such a big influence. Why? And being so conservative. Why?

When, where and why did it start? Wikipedia didn't really say, and I'm curious as to how this practice started. Thanks.

I recently learned Caffarelli was present at the 1755 Lisbon earthquake (he was hired to sing at the brand new opera house, which had only 4 operas before it was destroyed by the earthquake) so I'm reading up on it. Wikipedia has this to say:

The event was widely discussed and dwelt upon by European Enlightenment philosophers, and inspired major developments in theodicy and in the philosophy of the sublime.

However the explanatory paragraphs are rather vague. There some talk of Candide and such but nothing really meriting the term "major developments." Anyone have the deeper picture?

Which (preferably e-) books would you recommend to fully understand the situation in Middle East? So, books that deal with its history, geopolitics, causality... Thanks!

Preface: This might not be the exact sub-reddit to post under, but I'm hoping someone might have some historical information that could help shed light on the issue.

I've been thinking about this question a lot lately. Originally, I was thinking of it more from the perspective of Islam. It's quite clear in the Koran that sex outside of marriage is forbidden. Similarly, acts of sex outside of marriage seem to be condemned or discouraged in Buddhism, Hinduism, Judaism and most denominations of Christianity.

Regardless of your opinions on religion, it seems like there's more to it than mere coincidence that almost all of these religions have such an attitude towards these acts. I don't imagine someone will have a full answer, but if anyone has any information that could be useful, or perhaps point towards a book or paper that discusses this topic, it would be greatly appreciated.