The first civilizations developed in North Africa, Middle East, and South and East Asia because of the advantages that this areas offered to the people inhabiting them. The biggest advantage were the big rivers with long and wide fertile plains beside them, which enabled the people to be involved in agriculture and produce big amounts of food and even reserves. Since the food problem was solved, they were able to concentrate on other things in their spare time and started to develop architecture, sciences, philosophy, writing systems...
People with similar physical characteristics--to seek comfort people will find others who look similar to them to create immediate common ground.
This tendency in humans explains why people tend to seek out homogeneous groupings. We seek what we know and therefore we are most comfortable. This behavior can be exploited to create the 'isms' of society like racism or sexism. <span />
In the period of the Sui Dynasty (581-618 AD), Chang’an before was named Daxing. However, in a later time, the city got new reformations and innovations and was renamed Chang’an by the Tang dynasty administrators which then served as the Tang capital until its collapse in 904 AD.
This ancient imperial capital was the eastern commencement point of the Silk Road. The Silk Road has been of an enormous importance to the trade and cultural exchange to Xi’an (formerly Chang’an) as well as important crossroads for people from entire China, middle east, Rome, and Central Asia. The city thus developed into a hub of diverse ethnic recognition and religious beliefs.
In addition to the above, the tang dynasty manifested a tremendous cultural and religious fluorescence when it grew into a Buddhist learning center and also Taoism, attracting many pilgrims, and other scholars as well as philosophers. This didn’t end only with Buddhism, many other faith denominations emerged such as Nestorian Christianity, Zoroastrianism and Manichaeism, and later Islam.
therefore, the factors that made the tang cipital of Chang'an a center of culture and trade were mainly A and C; It welcomed foreigners and their beliefs, it was located at one end of the silk Road.
Answer:
Because drugs are addictive.
Explanation:
Mostly the one who use drugs are teenagers , with increased level of hormonal activity . Even if an individual take the drug once , his brain would force him to take more . this is how drug demand gets increased day by day .
A teenager who learns most of the things at this age gets easily addicted to this bad . and hence it is very to stop it in either way
