F one party to a contract uses any form of unfair coercion to induce another party to enter into or modify a contract, the coerced party may avoid the contract on the basis of .

Duress

Explanation:

Duress is when threats, violence, constraints, or other action are used to coerce someone into doing something against their will or better judgement.

It can further be defined as forceful coersion from an individual or grouo to another into doing what they normally wouldn't want to do.

Coersing one to modify a contract and the person complying, is because the individual being coerced is in duress.

the number of senators, and representatives, the state has in congress.