Questions what is the main features of the socialist economy?

The intellectual basis of the Renaissance was its version of humanism, derived from the concept of Roman humanitas and the rediscovery of classical Greek philosophy, such as that of Protagoras, who said that "man is the measure of all things." This new thinking became manifest in art, architecture, politics, science and literature. Early examples were the development of perspective in oil painting and the revived knowledge of how to make concrete. Although the invention of metal movable type sped the dissemination of ideas from the later 15th century, the changes of the Renaissance were not uniform across Europe: the first traces appear in Italy as early as the late 13th century, in particular with the writings of Dante and the paintings of Giotto.

79. 
    Tell about Timurid dynasty.
    

Key words: Amir Temur, war, family.
Timurid dynasty, (fl. 15th–16th century CE), dynasty of Turkic-Mongol origin descended from the conqueror Timur (Tamerlane). The period of Timurid rule was renowned for its brilliant revival of artistic and intellectual life in Iran and Central Asia. After Timur’s death (1405), his conquests were divided between two of his sons: Mīrānshāh (died 1407) received Iraq, Azerbaijan, Moghān, Shīrvān, and Georgia, while Shāh Rokh was left with Khorāsān.
Between 1406 and 1417 Shāh Rokh extended his holdings to include those of Mīrānshāh as well as Māzandarān, Sīstān, Transoxania, Fars, and Kermān, thus reuniting Timur’s empire, except for Syria and Khuzistan. Shāh Rokh also retained a nominal suzerainty over China and India. During Shāh Rokh’s reign (1405–47), economic prosperity was restored and much of the damage wrought by Timur’s campaigns was repaired. Trading and artistic communities were brought into the capital city of Herāt, where a library was founded, and the capital became the centre of a renewed and artistically brilliant Persian culture.

80. 
    Who is Ibn Sina?