Questions on Sengoku Japan.

by HanWsh

How often did Uesugi Kenshin pray to Bishamonten? Is him worshipping Bishamonten even true? Were there any specific rituals?
What was the currency of each respective damiyo in Japan in that time period? I would assume rice? Or maybe Cash? Gold? Silver? Silk?
Did the population of Japan increase or decrease during the era? Were there any particular regions or provinces that saw rapid development or destruction?
What were some examples of Sessei Taigen contributions to the Imagawa clan?
How did Imagawa Yoshimoto stack up as a general in comparison to his rivals like Takeda Shingen and Ujiyasu Hojo? Did he ever have a Mikatagahara or a Kawagoe?
Excluding the Satomi and Satake clans were there any other Kanto clan that put up a valiant fight against the dominant Hojo without Uesugi Kenshin intervention?
What was the relationship between Yoshihisa and Yoshihiro Shimazu like? Who was considered superior? What about their other brothers like Iehisa?
The Mori clan had strong relationships with their two rivers Kikkawa and Kobayakawa. But within the Mori clan which of the two rivers had more influence/ was more respected? Likewise who had the stronger authority and prestige between Motoharu and Takakage? Also, why didnt they attack the Ukita or Oda clan when Hideyoshi was running back to Central Japan?
Why didnt Oda Nobunaga or Hideyoshi ever claimed the title of Shogun?
Is the story of Hanbei capturing a castle with only 16 men true or folklore?
Is it true that Oichi was initially married to Shibata Katsuie but then was forced to divorce due to Oda Nobunaga and marry off to the Azai?
Excluding Shibata Katsuie, which of the many Oda generals had the most renown during the 1570s? Was it Maeda Toshiie?
Was the Tokugawa Shitenno a real title during the era? Assuming that it is real, was it given before or after the Matsudaira became the Tokugawa?
It seemed that most of the major damiyo like Nobunaga, Ieyasu and Kenshin all struggled with the Ikko Ikki. Were there any clan there was able to defeat the Ikko Ikki with little troubles?
Why were the Miyoshi clan under Nagayoshi at least unable to unify Central Japan considering the fact that they possess a large territory(1/4 of Shikoku and many other provinces plus domination of Kyoto) and strategic location at the centre of Japan?
Why was Kenshin so obsess with conquering Kanto when it was so far away from his power base at Echigo? Wouldnt it make more sense to fight for Shinano/Hida/Noto/Etchu?
Excluding the Date which other clan came the closest to dominating the North East? The Ashina? Mogami? Nanbu?
What was the army composition of a Damiyo during the era? A mixture of cavalry, swordsmen, spearmen, gunners and archers I would assume? But was there a preference for a clan to clan basis? What about the avaliability of horses or guns?
Oda Nobuhide warred with the Imagawa, Matsudaira, Toki and Saito clans in his south and north during his entire life. Why was it that he never head west to conquer Ise?
It is my understanding that Owari was split into 2. The Kiyosu Oda and Nagoya Oda clans respectively. What was stopping Nobuhide from destroying all his enemies within Owari, uniting the Oda, and exile the Shiba like Oda Nobunaga did 2 decades later? Furthermore, whenever Nobuhide went to war, did he mobillise all of Owari or only those from his base of power?

Yes he did. His HQ standard was the kanji for "Bi" (well, among others, like many he had multiple standards). And Hōon-ji in Yonezawa supposedly has the original (restored) statue. Bishamonten was widely worshiped by warriors, so it's no surprise. No, we don't know his rituals.
Yong Le Coin was the most widespread. Due to various problems of using a foreign-minted bronze coin as currency, it's value was measured in rice production, and then they just decided to straight up use rice production altogether. Others include locally minted valuable metal coins.
It's generally assumed population continued to increase. Kyōto saw a large amount of destruction in the Ōnin War and as tribute drastically dropped, so did culture and economy and so most likely population. Other than Kyōto, it is harder to pinpoint because there's too many cases of "rapid development or destruction". When power started being consolidated in the hands of a few large daimyō's, concentrated development of castle towns emerged. These rose and fell on the whim of the daimyō and the fortunes of war. Nobunaga's Azuchi Castle (and corresponding town) began construction in 1576. Between it's completion and Nobunaga's death, it was probably one of the most lively place in Japan. It was abandoned three year after Nobunaga's death in 1585.
Help Yoshimoto win control of the Imagawa Clan, negotiate alliances with Takeda Nobutora, then Shingen, then Hōjō Ujiyasu, and defeat Oda Nobuhide.
Hard to tell. Different circumstances. Assuming Kawagoe is as traditionally depicted (which is a huge assumption), no Yoshimoto never pulled off something like that, but no one did (I'm calling bullshit on Kizaki, actually I'm tempted to call bullshit on Kawagoe). While he was alive, Yoshimoto was known as Kaidōichi-no-yumitori. It's literally the "first archer of Tōkaidō*, and in this case "archer" means "warriors" in general. So at least Yoshimoto's contemporaries had incredibly high opinion of him. By the way, if by "Mikatagahara", you mean can Yoshimoto crush an enemy less than half his own in number, yes he can.
The question itself basically excluded all the major enemies of the late Hōjō clan during Kenshin's lifetime. Heck both the Satake and Satomi got major help from Kenshin rampaging in the Kantō. I mean would you pass up such an opportunity if you were an enemy of the Hōjō?
They worked well together.
Motoharu was in charge of operations along the San'indō (Sea of Japan coast). Takakage was in charge of operations along the San'yōdō (Seto Island Sea coast). When it became clear Hideyoshi played them for fools (a day after Hideyoshi left the area), Motoharu seemed to have wanted to pursue, but Takakage talked him down, seeming to prefer to honor the agreement anyway, likely preferring a peace treaty which would work towards preserving the Mōri clan rather than a risky gamble to enlarge it that could easily backfire. Also militarily, the main Mōri main contingent was stationed for defense a bit away at Matsuyama. This means by the time they learned the truth, Hideyoshi was at least two and a half day's march away, and before he left Hideyoshi had opened the dykes around Takamatsu, turning the area into a quagmire. This means it's highly unlikely that the Mōri could have caught up with Hideyoshi even if they did pursue him.
A month before his death, the court asked Nobunaga to pick a position from Daijō-daijin (Chancellor of the Realm), Kanpaku (first secretary/regent), or Sei-i Taishōgun. He got killed before he submitted an answer. For Hideyoshi see here
The sources for it are certainly not the most reliable. From surviving contemporary sources it seems that he did take the castle (with major outside help, not with 16 men only). I'm of the opinion that either it didn't happen, or if it did it was a failed coup attempt that ended up greatly weakening the Saitō more than anything.
Sounds fictional
Akechi Mitsuhide, Hashiba Hideyoshi, ~~Ishikawa~~Takigawa Kazumasu. Toshiie was somewhere between a high ranking bodyguard and one of Shibata Katsuie's subcommanders, depending on which year of the 70s we're talking about.
It was not a real title, that era or not.
I mean, as big of a problem as it was, Ieyasu did crush the Mikawa revolt in under a year. So Tokugawa Ieyasu. Of course he also got the smallest rebellion.
Because he got sick and died. Everything else is conjecture, as who knows what would've happened had he lived. Though he did have some bad luck, and he had considerably less economic strength when he made a bid for the capital than when Nobunaga did.
Not being Kenshin, I can't tell you. However, considering Kantō was the traditional heartland of the warriors, had one of the highest agricultural output, inheriting the Uesugi name and position of Kantō Kanrei offered great opportunity, and he need to check the Hōjō's expansion, campaigning in the Kantō makes perfect sense. And he did campaign in Noto and Ecchu. Shinano and Hida were only valuable to someone in Kenshin's position as buffer, and so we'd expect someone in his position to only interfere there to keep up those buffer, which is exactly what he did.
Eh. To be honest the only one who came close was the Date, because Masamune won over all the rich valleys in the south. Although, if you consider Hideyoshi's 1587 "No Fighting" order as the end, then no one was.