Random question here, but it just popped into my mind. When did modern, numbered, addresses as we know them come into the world? Was it with the start of postal services, and did streets have even have names, or were directions given in reference to other things?

Thanks in advance :)

I am doing family history research and my grandfather was a german enemy prisoner of war held in UK scotland. How do I find out more about him? I am searching for any documentation on him that proves his nationality. He stayed in UK after the war ended. What was the protocol for enemy POWs who decided to stay after the war was over? Did they have to register anywhere? Who did they register with? Where can I find this information? Thank you for any help.

I do not mean if they knew that days are longer/shorter depending on the latitude, which is easy to recognize. I mean if large empires like the roman one were aware that if the sun set over one of their cities in Syria, it would take two more hours till it sets over a city in Portugal with the same latitude. I don't know how they could have recognized this, since traveling or even sending pigeons did take days/weeks back then.

There must have been a lot of stuff going down while everyone's password was 'password' and routers were wide open.

As per the title. Particularly interested in labour movements in the USA, as well as perhaps books that explore specific incidents in more detail (Haymarket Bombing, Sacco & Vanzetti, etc) - but any recommendations are welcome.

As far as I know, the Japanese didn't field heavier tanks than the Chi-Ha and Ha-Go, which were lightly armed and armored compared to the American M4s, until they began to prepare for for an invasion of the homeland, and those heavier tanks never saw action.

Was Sparta really as great for women as people think? Was the reality of life in Athens less restrictive, especially for lower class women?

I know that the FBI took documents and blueprints and they released most of those files but they basically covered mostly everything in those documents with ink but why? And i have been reading too many conspiracy theories to know what’s true or not, and I’m not a expert in what the FBI does with documents so I might have got some information wrong but I hope you guys get the basic idea.

It's fairly easy to see the geographical barriers that separate the other former parts of the Roman Empire into separate countries(Pyrenees, Alps, the Mediterranean) but as far as I can tell there is not an exaggerated boundary between Portugal and Spain. I even remember reading somewhere that all of Iberia was joined in a union at one point, however it obviously didn't last. Why would the people of Iberia not have united of their own accord beforehand?

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I heard time zones were invented in order to deal with the issue of transcontinental railway schedules. But before the need of such time table, I assume people realized solar noon was earlier in some places and later in other places. If anything, it follows from the idea that the earth is round and that the sun revolves around the earth. Were there practical implications for that knowledge? (Say, religious rituals needing to be performed at the same time throughout a large empire?) Who are the people who discovered this fact? How did they do so? (Astronomical models? "precise" clocks? Something else?)

Thanks.

It seems to be widely accepted that it was a functional lingua franca, but what exactly does that mean? Was it like <10% of the population, who comprised the administrative class and just happened to be spread across the country? Or was it a significant chunk of the people?

Until fleet sales were discontinued recently, the Ford Crown Victoria was the police car across the United States. I know there were other police cars for sale by other manufacturers, but none of them seemed to be anywhere near as common as the Crown Vic. How did this car first come to be adopted by police departments, and how did it become so widespread in police use?

Heya, I love seeing the variety of people who give great answers on this sub, but a lot of the sources I see are books are articles you mainly find in university libraries. I was wondering, for everyone not tied to a university, where do you get a hold of your sources generally? A ton of people here aren't academic, so how do you 'do history' without a university next door?