In  Arabic Egypt is called مصر, or Miṣr, and in ancient times the  country  was known as Kemet, or the black land, due to the alluvial soil  which  was deposited during the annual inundation of the River Nile. This   yearly event gave Egypt its fertile land that enabled it to expand   along the length of the river, especially in the Delta where many   various crops were, and still are, harvested.
Egypt  covers an area of approximately 1,001,450km2  (386,662 miles²) and is  bordered by Israel and the Gaza Strip in the  north-east; the Red Sea in  the east; Sudan in the south; Libya in the  west; and the Mediterranean  Sea in the north. It is the 3rd most  populous country in Africa and  the most populous in the Middle-East with  the majority of its estimated  80 million people living on, or near, the  banks of the River Nile.  Only 5.5% of the total land area is actually  used by the population,  the area that borders the River Nile as well as a  few oases, the other  94.5% being uninhabitable desert. 
The  River Nile vertically bisects the Sahara Desert and  the area to the  west is known as the Western Desert, or Libyan Desert,  with the area to  the East, as far as the Red Sea, being called the  Eastern Desert. The  desert itself is very sparsely inhabited with  relatively small  population centres growing up around oases such as the  Fayoum, Siwa,  Bahariya, Farafra, Dakhla and Kharga to the west and any  areas of  habitation being restricted to the many wadis (or valleys) to  the east.  
Within  the Libyan Desert can be found an enormous area  of sand which is known  as the Great Sand Sea and located within this  area are several  depressions that have their elevations below sea level.  These include  the Qattara Depression, which covers an area of  approximately 18,000km2  (7,000 miles2) and reaches a depth of  approximately 133m (436 ft)  below sea level: the lowest point in Africa.
Most  of the Eastern Desert lies on a plateau that  gradually rises from the  Nile Valley to heights of approximately 600m  (2,000 ft) in the east.  Along the Red Sea coast there are many jagged  peaks that reach as high  as 2,100m (7,000 ft) above sea level. The  Nubian Desert lies to the  extreme south of the Eastern Desert, along the  border with Sudan, and  it is an extensive area of dunes and sandy  plains.
The  Sinai Peninsula mainly consists of sandy desert in  the north with  rugged mountains in the south; the summits here towering  more than  2,100m (7,000 ft) above the Red Sea. Mount Catherine, or Gebel   Katherîna, reigns supreme here at a height of 2,629m (8,625 ft) and is   the highest point in Egypt, slightly dwarfing the nearby Mount Sinai, or   Moses Mountain (Gabal Musa), at 2,285m (7,497 ft). According to   Islamic, Christian and Jewish beliefs, the biblical Mount Sinai was the   place where Moses received the Ten Commandments, though not everyone   agrees that this particular mountain is actually the biblical one. 
The  River Nile is nowadays regarded as the longest  river in the world and  it enters Egypt from the Sudan and flows north  for about 1,545km (960  miles) until it exits into the Mediterranean Sea.  From the Sudanese  border to Cairo, the River Nile flows through a  narrow cliff lined  valley, which, south of Edfu, is hardly more than 3km  (2 miles) wide.  From Edfu to Cairo, it is about 23km (14 miles) in  width, with most of  the arable land lying on the western side. Just  north of Cairo the  valley merges with the Delta before the River Nile  joins with the  Mediterranean Sea.
The  Delta is a triangular shaped plain, bordering the  Mediterranean  coastline for approximately 250km (155 miles). Silt has  been deposited  here by the many tributaries of the River Nile (Rosetta  [Rashid],  Damietta [Dumyat] and others) and this has made the Delta the  most  fertile area of Egypt. The Aswan High Dam, however, has reduced the   flow of the Nile, the annual inundation now being confined to history,   and this has caused the salty waters of the Mediterranean Sea to erode   most of the land along the coast. Nowadays a series of four shallow,   salty, lakes extend along the seaward extremity of the delta.
Lake  Nasser, the world's largest man-made reservoir,  was formed by the  building of the Aswan High Dam in 1970. It is  approximately 480km (300  miles) long and 16km (10 miles) across at its  widest point. Almost  two-thirds of this lake is situated in Egypt, and  it extends southwards  across the Sudanese border.
From  ancient times, right through to the modern era,  the Nile Valley has  been divided into two separate regions, Lower Egypt  and Upper Egypt.  Lower Egypt, where the Pharaohs wore the red crown, is  the area of the  Delta, whilst Upper Egypt, where the Pharaohs wore the  white crown, is  the entire valley south of Cairo (or Memphis during the  Pharaonic  period).
The  land boundaries, which Egypt shares with other  countries, are 2,665 km  in total and comprise of: Gaza Strip 11 km,  Israel 266 km, Libya 1,115  km and Sudan 1,273 km. Its coastline is 2,450  km long which includes  the Mediterranean Sea, the Red Sea, the Suez  Canal and the Gulf of  Aqaba, though any indentations, which are suitable  as harbours, are  confined to the delta. 
Egypt  has one of the most diverse economies in  North-Africa and the  Middle-East with the various sectors employing the  following amounts of  people: agriculture 32%; industry 17%; services  39%; and tourism 12%.
A  predominantly Sunni Muslim country, Egypt has Islam  as its state  religion. A genuine estimate of the percentages of the  various  religions is a controversial topic in Egypt, and no two sets of  figures  appear to match, but it is generally accepted that 80-90% of the   population are Muslims. Five times a day the "Adhan", the Islamic call   to prayer, can be heard being broadcast from the loudspeakers on Cairo's   many minarets. There are so many Mosques in the Egyptian capital that   it was once dubbed "the city of 1,000 minarets". 
Cairo  also hosts a considerable number of church towers  due to the Christian  minority in Egypt, which makes up about 8-18% of  the population. Of  these, 90% belong to the native Coptic Orthodox  Church of Alexandria  with the other 10% comprising of the Coptic  Catholic Church; the  Evangelical Church of Egypt; and various other  Protestant  denominations.
The  remaining 2% of the population are Jews, with a  number of synagogues  being sited around Cairo. Islam, Christianity and  Judaism are the only  three religions that Egypt officially recognises.

 
 
 
 
