In 373 BC, Nectanebo I from Sebennytos was able to drive the Persian army out of the Delta when it reinvaded. He had hardly any problems with other countries, so was able to commence a large number of building projects. He was succeeded by his son Teos (Dje(d)hor), who attacked Syria overland and by sea, an expedition that was so expensive that Egypt revolted. Nectanebo II was proclaimed king and Teos defected to the Persian court. Nectanebo II, the last native ruler of Egypt, was faced with renewed Persian attacks led by Ataxerxes III. Although these were initially not very successful, he succeeded in conquering Egypt in 342 BC, thus heralding the start of the 2nd Persian Period (31st Dynasty).