The period referred to as the Islamic Golden Age lasted for just over 400 years, during which time huge advances were made in the fields of art, humanities and science. During this time, Baghdad become the intellectual capital of the world, and efforts were made to consolidate important texts from all countries into one library.
Under the Gold Age leadership, citizens of the Abbasid Caliphate were also granted better access to health care, infrastructure and education than ever before. Heavy emphasis was placed on scholarship and learning during the Islamic Golden Age. It was during this time that the first public universities that granted degrees to graduates were founded in Baghdad, and the city welcomed scholars of all nationalities and religions so long as they made significant contributions to their fields. Trigonometry, the scientific method, and early observations that describe a process similar to evolution were some of the accomplishments made during this time.
Many of the works of Greek philosophers like Aristotle that we are able to read today were preserved during the Islamic Golden Age. Texts that were destroyed in their native counties were found when excavating the libraries of villas and palaces around Baghdad and major cities in Egypt.