Answer:
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.