Modern Egypt is considered to be a regional and middle power, with significant cultural, political, and military influence in North Africa, the Middle East and the Muslim world. Its economy is one of the largest and most diversified in the Middle East, with sectors such as tourism, agriculture, industry and services at almost equal production levels. In 2011, longtime President Hosni Mubarak stepped down amid mass protests. Later elections saw the rise of the Muslim Brotherhood, which was ousted by the army a year later amid mass protests.
Try to answer this question if possible (otherwise reply "unanswerable"): What leader stepped down in 2011?
President Hosni Mubarak