The document discusses several key achievements and developments during Islam's Golden Age: 1) The spread of papermaking from China lowered the costs of written communication, increasing literacy and the use of things like early checks in business. 2) The House of Wisdom in Baghdad brought together scholars from different places and languages to translate works into Arabic, advancing knowledge sharing across cultures. 3) As the Abbasid Empire expanded, the spread of Arabic as a universal language reduced political conflicts within the growing empire.