I believe its the country had previously been isolated from the other ancient civilizations, and the Silk Road allowed a cultural exchange because the Silk Road was the main way of trading in that part of the world in those days.
Answer:
Conditioned Stimulus
Explanation:
The conditioned stimulus in pavlovian conditioning is an unique advantage that becomes linked with the unconditioned stimulus and eventually triggers a reflex. When delivered alone, an initially neutral stimulus that is coupled with an unconditioned stimulus ultimately elicits the desired reaction in an organism.
Photosynthesis, the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
In the history of the United States, the only amendment that's ever been repealed is Prohibition. The 21st Amendment, in 1933, repealed the 18th Amendment, of 1919, which prohibited the making, transportation and sale of alcohol.
Explanation:
