Why do local and regional political systems exist

Local and regional political system exists to ensure political tasks are done and reach the people. The local political system has a direct link with the community, they present, implement and enforce the laws. Regional politics have the wider scope of understanding the needs of the region and applies necessary political intervention to ensure that it reaches the local and regional system. Faster dissemination of laws and connection can also be established. 

Answer(a); // soil salinization and waterlogging;