what are earthworks and what are they intended to do?

what are earthworks and what are they intended to do?
Answer
Brief Explanations:
Earthworks are modifications of the ground - surface by moving soil and rock. They can serve multiple purposes like construction of foundations for buildings, roads, and dams; land - shaping for landscaping; and in military contexts for fortifications.
Answer:
Earthworks are the movement and shaping of soil and rock. They are intended for construction (foundations, roads, dams), landscaping, and military fortifications among other things.