This section is from the book "The Law Of Contracts", by William Herbert Page. Also available from Amazon: Commercial Contracts: A Practical Guide to Deals, Contracts, Agreements and Promises.
Undue influence is such influence as overpowers the will of the party upon whom such influence is exerted, and substitutes therefor the will of the party who exerts such influence.1 In discussing undue influence, the courts sometimes emphasize the idea of coercion. It is a "kind of mental coercion";2 and sometimes they emphasize the idea of fraud.3
 
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