A contract is a promise, or set of promises, for breach of which the law gives a remedy, or the performance of which the law in some way recognizes as a duty. Contracts law involves assisting individuals and businesses in the negotiation and execution of all types of legally enforceable agreements -- including contracts for the sale of property, employment agreements, and promissory notes -- and also to represent clients in legal disputes and litigation to enforce contracts.
Challenge (formerly, Challenge Mills) is an unincorporated community in Yuba County, California. It is located on Dry Creek 30 miles (48 km) northeast of Marysville, at an elevation of 2595 feet (791 m). A post office opened at Challenge in 1895.