From Wikipedia
The New Kingdom pharaohs established a period of unprecedented prosperity by securing their borders and strengthening diplomatic ties with their neighbors. Military campaigns waged under Tuthmosis I and his grandson Tuthmosis III extended the influence of the pharaohs to the largest empire Egypt had ever seen. When Tuthmosis III died in 1425 BC, Egypt had an Empire extending from Niya in north west Syria to the fourth waterfall of the Nile in Nubia, cementing loyalties and opening access to critical imports such as bronze and wood. The New Kingdom pharaohs began a large-scale building campaign to promote the god Amun, whose growing cult was based in Karnak. They also constructed monuments to glorify their own achievements, both real and imagined. The female pharaoh Hatshepsut used such propaganda to legitimize her claim to the throne. Her successful reign was marked by trading expeditions to Punt, an elegant mortuary temple, a colossal pair of obelisks and a chapel at Karnak. Despite her achievements, Hatshepsut's nephew-stepson Tuthmosis III sought to erase her legacy near the end of his reign, possibly in retaliation for usurping his throne.