Can I destroy foreign currency? In most countries it is illegal to destroy money, more precisely, their own currency. But what about foreign currency? Can I tear a dollar in the UK? Would it be against American or English law? I should mention that I know that it is not illegal to destroy money in every country, my question is about countries where it is, like US and UK.
In France : Besides a 1810 old law prohibiting the destruction of money (Code Pénal, Article Ancien 439), this law was abrogated on the 1st of March, 1994. This can be supplied by a case in the 4th of June, 1975 : destructing a bank note isn't considered as "destructing money" as such as destructing coins, which is prohibited, since "bank notes simply are monetary signs who aren't currently operating obligations (translation)".
Prompted by this recent similar question, I've revisited this question and deleted my original answer as it was completely off the mark. This is its replacement. It is illegal, and it turns out to be an international standard in the Berne Convention. Article 16 in full: (1) Infringing copies of a work shall be liable to seizure in any country of the Union where the work enjoys legal protection. (2) The provisions of the preceding paragraph shall also apply to reproductions coming from a country where the work is not protected, or has ceased to be protected. (3) The seizure shall take place in accordance with the legislation of each country. Your scenario falls squarely within point (2) and the imported George Orwell book is to be treated as an infringing copy within the UK. The implementing UK legislation for (2) can be found in Section 27(3) of the Copyright, Designs and Patents Act 1988.
Because breaking the law is not breach of contract (Necessarily). Were you to use the model to 3D-print a gun and rob banks with it, without this clause, you have not broken the contract. That would mean that the provider could neither sue you for any damages the use of their model in your crime spree might have caused them, nor can they legally terminate the licence with you.
What does the contract say? I write that so often I should get a stamp made. If the contract is silent, then it is implied that payment in US currency is acceptable, as is any other method of payment the parties agree to. As you have correctly quoted, there is no limit to the number of US coins that are valid for payments, unlike in many other jurisdictions where there is such a limit. Accept the coins, make the tenant wait while you count them one by one and then give them a receipt. Oh, and change your lease when you can to nominate sensible forms of payment like electronic transfer.
You own it In general, if you own an object, you can do what you like with it if you otherwise comply with the law. It is possible that a particular object may be protected under heritage or similar law, but if it isn’t, and you comply with environmental and safety law, you grind that thing into dust if you want to. Of course, if it did, you would never be able to delete a voicemail, email, or throw out used notepaper - they’re all copyright.
The part about "If I'm the owner of the content, surely I have the right to request its deletion" is the problem. Sure, you have the right to request, but you can't legally compel. You have an agreement with them, according to which you got something, and they got something. You can't then take back the thing that you gave them, which is permission to use. You didn't give them the IP itself, which you still hold. Here's an analogy. You may own a car, and can give a person permission to use the car (let's say "if you bring me back a pound of cheese from the store"). You cannot later change your mind (especially after you've gotten the cheese) a say that you retract that permission and therefore they actually stole your car. When permission to use is given, as long as the conditions for granting permission are satisfied, you can't un-give permission.
What should he do use or not use digital currency on sundays? If I understand correctly, you are asking about a scenario where the parties agree that the governing law will be that of jurisdiction B notwithstanding that the contract, or the relevant part thereof, will be performed in jurisdiction A. If A and B were [in] different countries, the issue could depend on what (if any) international treaties binding both countries provide regarding a conflict of laws. Absent any realistic specifics (enasia and eukaria are not realistic), let's assume that A means the U.S. or is some jurisdiction in the U.S. The contractually chosen law (jurisdiction B) would apply unless doing so contravenes policy restrictions of the jurisdiction where the contract is performed (jurisdiction A). Those policy restrictions could be public policy, legislation, or legislative intent that can be inferred from jurisdiction A's laws. For instance, see Ticknor v. Choice Hotels Int'l, Inc., 265 F.3d 931, 937 (9th Cir. 2011): The law of the state chosen by the parties ... will be applied ... unless ... application of the law of the chosen state would be contrary to a fundamental policy of a state which has a materially greater interest than the chosen state[.] (citing Restatement (Second) of Conflict of Laws at § 187(b)). Note that discrepancies between A's law and B's law do not necessarily result in a material detriment to A's policy, and it is unclear from your post whether refraining from using digital currency on Sundays would be such case. One would need to ascertain A's public policy and/or legislative intent (if the relevant legislation has been enacted).
It is legal for a company to ask for any information they want as a condition of doing business with you, so long as their request isn't proscribed by law. I don't know of any jurisdiction where a request for banking or credit information is illegal. (In this case, however, it does seem like you are being phished. You could report the matter to your country's consumer protection agency.)