Anonymous There were a wealth of causes. As shown. 'a wealth of' can be considered a multi-word quantifier, so agreement is with the following noun causes .
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AnonymousThere were a wealth of causes.As shown. 'a wealth of' can be considered a multi-word quantifier, so agreement is with the following noun causes.
AnonymousWhen deciding on subject-verb agreement, prepositional phrases ("of causes", in your sentence) should be ignored.What would you recommend for this one?
CalifJim.What would you recommend for this one?There [was? / were?] a number of causes.CJIn general: