1.0Medievalists.nethttps://www.medievalists.netMedievalists.nethttps://www.medievalists.net/author/charlemagne/rich600338<blockquote class="wp-embedded-content" data-secret="G1GvD4p2TL"><a href="https://www.medievalists.net/2012/03/al-idrisi-and-his-world-map-1154/">Al-Idrisi and His World Map (1154)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.medievalists.net/2012/03/al-idrisi-and-his-world-map-1154/embed/#?secret=G1GvD4p2TL" width="600" height="338" title="“Al-Idrisi and His World Map (1154)” — Medievalists.net" data-secret="G1GvD4p2TL" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> Working for eighteen years under the patronage of the Norman King Roger II Guiscard of Sicily, who gathered scholars from many regions at his court in Palermo, the Moroccan geographer Al-Idrīsī in 1154 completed a description and an atlas of maps of the known world.http://www.medievalists.net/wp-content/uploads/2012/03/Al-Idrisis_world_map-300x326.jpg