The most important use of rocks in Nigeria is for?

The most important use of rocks in Nigeria is for building. Rocks are used as materials for construction of various structures such as houses, roads, bridges, dams, and other civil engineering projects. Rocks are readily available in many parts of Nigeria, and they are often cheaper than other construction materials such as bricks or cement. Additionally, rocks are durable and can withstand harsh weather conditions, making them ideal for building structures that need to last a long time. Overall, the use of rocks in construction is essential for the development of infrastructure in Nigeria.