It is true that the Chinese were able to discover the process in producing silk about 2700 BC. So, the answer is letter A. According to the history, The silk discovered from the loss soil in Yellow River in Shanxi Province, in northern China, dated back from 2600 to 2300 or sometime near 2700 BC.
Early Sumerian city-states were at war to control agricultural and water territories, until the ascent of the First Dynasty of Lagash in 2500 BC. A life of farming and tending to livestock was what early Sumerians were preoccupied with, under the rule of their monarchs. In 500 BC, with advancements in science and the arts, the typical Sumerian would have shared cultural ties with the neighboring Akkadians. A more diplomatic political climate encouraged Sumerians to be bilingual, and more engaged in literary and scientific studies.
Benjamin Franklin and Thomas Jefferson
Judicial review is the ability of the supreme court to decide and examine if a statute, treaty or administrative regulation violates the provision of the existing law written in the state constitution. In the United States, the authority for judicial review has been inferred from the structure, provisions, and history of its Constitution.
