Irrigation canals do not expand from land. They expand from water into the land.
Do you mean little miniature canals? If so, irrigation
Irrigation
Irrigation
Irrigation helped farmers to grow crops because the water in the Nile would spread through the canals and create wet land, so that the wet land would grow crops. Without the river Nile Ancient Egypt would have been a desert and wouldn't have been able to grow crops and create irrigation.
The created an irrigation system and underground canals.
Irrigation systems such as irrigation ditches, channels and canals artificially supply dry land with water.A river is a system which supplies dry land with water naturally, not artificially.
That would be "irrigation."
Rivers, creeks, dams, canals and irrigation ditches.
develop more land that was previously too dry for farming.
Irrigation is the process of supplying water to land using artificial means such as man-made canals, pipes, or sprinklers to help plants grow. It is a crucial practice in agriculture to ensure crops receive enough water for optimal growth and yield.
develop more land that was previously too dry for farming
The main method of bringing water to dry land is to use canals or pipes for irrigation. In some cases, such as in California, a canal is used to transport the water across large, flat areas, and then it is pumped through pipes to go up and down steep hillsides.