The contractor shall provide clean tree seed in accordance with the provisions and requirements stated herein and to the sole satisfaction of the Department. 2.1.2 The contractor shall not engage or use the services of subcontractors in performing the contract unless the contractor obtains prior written approval from the Department. Any subcontractors used in conjunction with this agreement shall be bound to the same requirements placed on the contractor. 2.1.3 This contract may not be assigned in whole or in part by the contractor without written consent of the Department. 2.1.4 The contractor shall agree that this agreement shall not be amended or modified except in writing and signed by all parties of the original agreement. 2.1.5 The contractor agrees to comply with all applicable laws of the State of Missouri. 2.1.6 This contract shall be interpreted in accordance with the laws of the State of Missouri. It is mutually agreed that the venue for any cause of action regarding this contract shall be the Circuit Court of Cole County, Jefferson City, Missouri.