Abu Abdullah Muhammad, also known as Ibn Battuta was a Muslim scholar and traveler of Moroccan origin who undertook a series of travels and excursions during his life which are now a days called <em>the Rihla</em> (The Travels). Unlike the influence the travels of other explorers, such as Marco Polo had, Battuta's travels only had a very modest impact on the world until the 19th century. Despite not providing much influence to other explorers, Battuta's accounts of his travels provide a gateway to the civilizations of the muslim world during the age.
A Map key and that thing where it has a centimeter represent a certain distance on a map.
The United States Constitution can be changed informally. Informal amendments mean that the Constitution does not specifically list these processes as forms of amending the Constitution, but because of change in society or judicial review changed the rule of law de facto.