Why were clay and mud-brick important resources in Sumer how were they used?

Clay and mud-brick were essential resources in Sumer due to their abundance and versatility. They were primarily used for constructing buildings, such as homes and temples, as well as for creating pottery and storage containers. The use of mud-brick allowed Sumerians to build durable structures that could withstand the region's climate, while clay facilitated the development of writing through cuneiform on clay tablets, which was crucial for record-keeping and communication.