What tools did they use to build the rice terraces why are terraces useful?

Rice terraces were built using simple tools such as wooden plows, hoes, and shovels, often crafted from local materials. These terraces are useful because they create flat areas on sloped land, which helps manage water efficiently, reduces soil erosion, and maximizes arable land for rice cultivation. Additionally, terraces help in conserving moisture and nutrients, allowing for sustainable farming practices in challenging terrains.