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1) Nothing Nevada Revised Statutes or case precedent mandates that a contract must only be written in English. In fact, this is true for pretty much any US jurisdiction. So it may be written in French. This is not unusual (meaning a contract in a foreign language being applied in a US Court of law).
2) It is also not unusual for a contract to have a choice of law clause, choice of jurisdiction clause, or a combination of the two.
3) A choice of law is a clause that decides which law is applicable. Under choice-of-law principles, parties are permitted within broad limits to choose the law that will determine the validity and effect of their contract. Gamer v. DuPont Glore Forgan, Inc., 65 Cal. App.3d 280, 135 Cal. Rptr. 230, 234-35 (1976); Grady v. Denbeck, 198 Neb. 31, 251 N.W.2d 864, 865 (1977). See Restatement (Second) of Conflicts of Laws § 187 (1971). The case of BEHRINGER HARVARD LAKE TAHOE, LLC v. Bank of America, NA, Dist. Court, D. Nevada 2013 cites this:
"Under the circumstances present here, where many of the venue factors are inconclusive, the Court considers the choice of law to be the most important consideration in determining the merits of BOA's Motion. A federal court applies the choice-of-law rules of the state courts in the district where it sits. Klaxon Co. v. Stentor Elec. Mfg., 313 U.S. 487, 496 (1941). Nevada's choice-of-law principles permit parties "within broad limits to choose the law that will determine the validity and effect of their contract." Sievers v. Diversified Mtg. Investors, 95 Nev. 811, 815 (1979). So long as the agreement has a substantial relation with the transaction, and is not contrary to the public policy of the forum, than that choice is valid. Id."
4) A jurisdiction clause is a clause that decides where any issue would be litigated. However, Nevada requires more specific verbiage for this to be applicable:
"Other state courts have distinguished between mandatory and permissive forum selection clauses. See, e.g., Garcia Granados Quinones v. Swiss Bank Corp. (Overseas), S.A., 509 So.2d 273, 274 (Fla.1987) (recognizing that a mandatory jurisdiction clause requires "a particular forum be the exclusive jurisdiction for litigation," while permissive jurisdiction is merely a consent to jurisdiction in a venue (internal quotation marks omitted)); Polk Cnty. Recreational Ass'n v. Susquehanna Patriot Commercial Leasing Co., 273 Neb. 1026, 734 N.W.2d 750, 758-59 (2007) (distinguishing a mandatory forum selection clause based on the words "shall be brought only in" a particular jurisdiction from a permissive forum selection clause where parties only "consent and submit to the jurisdiction" of other courts); Caperton v. A.T. Massey Coal Co., 225 W.Va. 128, 690 S.E.2d 322, 338-39 (2009) ("[T]o be enforced as mandatory, a forum-selection clause must do more than simply mention or list a jurisdiction; in addition, it must either specify venue in mandatory language, or contain other language demonstrating the parties' intent to make jurisdiction exclusive.")." Am. First Fed. Credit Union v. Soro, 359 P. 3d 105 - Nev: Supreme Court 2015.
Often, the two clauses are combined.
So the Court would normally recognize both provided the proper requirements are in place.
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