Between 1930 and 1990

Take English, how far back would I able to go and understand English, or say German with a modern ear? Were languages still regional up until the time of say, radio? If I went back to the time of Alfred the Great what language was the common tongue?

I know that the Mormon church was founded after Joseph Smith claimed to have a vision sent from God, but this is the only American event that I know of that involved a specific religious vision. How seriously did Americans take these stories of divine revelation? Today we consider most people mentally ill if they start sharing these stories. Have Americans always been skeptical of the validity of a religious vision? If a person claimed to have had a religious vision, what would be the consequences? What were the most fertile periods for people claiming to have had religious visions?

Why aren't Christians still debating the nature of Christ, and why did this theological debate not cause schisms in the Western church like it did in the Byzantine Empire?

Some films show a large formation of soldiers charging toward the enemy formation, and then the soldiers at the front fight while the ones behind can't even reach the enemy. Other films show hundreds of individual fights with two or three combatants who largely ignore what is happening around them.

So which is more accurate when compared to actual medieval battles? Or did it just differ depending on the situation / terrain / leadership?

Relative to the modern calendar. For instance, do we know exactly when Caesar was killed? Is there anything from hundreds of years before then that we can put a precise date on?

To be clear, it's not enough to merely label the event with a date, because I understand there have been irregularities in the convention. I want to know what is the earliest significant date for which we could, in principle, count out exactly how many days ago it was from right now.

Does the answer change if we lower our precision to just the season and year?

(Edit: I feel silly for my Caesar example, as I just remembered the "ides of March". Still, has the calendar remained consistent over that time span to the point that we can figure out when it was?)

I was wondering whether Ukraine had distinct borders before 1918 and if it did not, how did the borders during the USSR period were determined

Like the Ottoman Empire treaty with Catherine the Great.

Many different theories have been brought up on the aftermath of Jesus' body including the most famous resurrection story. For the historians that believe Jesus existed, what do you think happened to his body and what historical evidence do you have to support this? Is this theory held by most historians? If so, what theory is and why?

Also as a side question, what do historians think of books by apologists on this subject such as Lee Strobel's A Case For Christ (probably not the best example but I hear of it a lot from Christians)?

Edit: I honestly don't know the answer to this. People asked for information on the historical Jesus but not about the location of his body. I have no knowledge in this issue and want to learn. Please don't down vote so much. If this has been brought up, please post a link.

Hi, I've been reading in christian apologetics texts about judeo- christian tradition of European and American culture. (Politicans also like to use it.) But the same apologicians (?) say that Christianity is so different from Judaism, mainly the idea of a Messiah, and also the Law and such. But today, we always hear about judeo-christian tradition. I would like to know when this term came to use and why. Is it because post-holocaust trauma, that we have to acknowledge Jews as part of European history, which to me seems pretty inadequate as the Jews were, and still are, just a minority among plenty other cultures. Or to what extent is this term justifiable? Thank you, and I'm very sorry for my bad english, which constrains me from stating my questions properly.