It`s very important to write a contract. It may take a little time. Example: «If XYZ does not provide 40 yellow or blue widgets by October 31, 2013, this contract is void and not aeroce.» The first step is to make sure you have the right contract. As with capacity, you can still technically enter into a contract containing illegal content. However, if the other party does not maintain its end of business, you will not have an argument for it to be held liable for damages in court because the contract was illegal from the beginning. It may seem that the difference between a unilateral treaty and a bilateral treaty is very clear. However, a unilateral treaty must be totally unilateral. . .