Here is a question about this article: A state's consent may be invalidated if there was an erroneous understanding of a fact or situation at the time of conclusion, which formed the "essential basis" of the state's consent. Consent will not be invalidated if the misunderstanding was due to the state's own conduct, or if the truth should have been evident.
What is the answer to this question: An erroneous understanding of a fact or situation may only invalidate a state's consent to a treaty if what is also true about the erroneous understanding?
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So... formed the "essential basis" of the state's consent

Here is a question about this article: On 2 March 1882, Roderick Maclean, a disgruntled poet apparently offended by Victoria's refusal to accept one of his poems, shot at the Queen as her carriage left Windsor railway station. Two schoolboys from Eton College struck him with their umbrellas, until he was hustled away by a policeman. Victoria was outraged when he was found not guilty by reason of insanity, but was so pleased by the many expressions of loyalty after the attack that she said it was "worth being shot atto see how much one is loved".
What is the answer to this question: Who stopped Maclean after he shot the Queen?
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So... Two schoolboys from Eton College

Here is a question about this article: The "General Law of Linguistic Rights of the Indigenous Peoples" grants all indigenous languages spoken in Mexico, regardless of the number of speakers, the same validity as Spanish in all territories in which they are spoken, and indigenous peoples are entitled to request some public services and documents in their native languages. Along with Spanish, the law has granted them more than 60 languages the status of "national languages". The law includes all indigenous languages of the Americas regardless of origin; that is, it includes the indigenous languages of ethnic groups non-native to the territory. As such the National Commission for the Development of Indigenous Peoples recognizes the language of the Kickapoo, who immigrated from the United States, and recognizes the languages of the Guatemalan indigenous refugees. The Mexican government has promoted and established bilingual primary and secondary education in some indigenous rural communities. Nonetheless, of the indigenous peoples in Mexico, only about 67% of them (or 5.4% of the country's population) speak an indigenous language and about a sixth do not speak Spanish (1.2% of the country's population).
What is the answer to this question: How many languages have been giving the status of "national languages"?
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So...
more than 60