Why did the pharaohs of Egypt organize military campaigns?

Military campaigns in Ancient Egypt were organized with the aim of suppressing rebellions, to seize new lands, slaves, gold mines. During the reign of Pharaoh Sneferu in the middle of the 3rd millennium BC, military campaigns were made to Libya, Nubia for cattle and slaves. The main purpose of such trips was copper deposits in the Sinai Peninsula. Pharaoh Sahura formed a powerful fleet and captured a large number of prisoners from Phenicia. The pharaoh seized gold and the most valuable species of wood in the country of Punt in eastern Africa. One of the most powerful military leaders of Ancient Egypt was Thutmose 3, he established his centralized authority in Palestine, Phenicia, Syria.