Answer:
Plasticity
Explanation:
The nervous system is able to adapt and readjust how it responds to changes in the environment. This is known as plasticity of the nervous system.
This plasticity of the nervous system is what comes into play when stand up comedians have to constantly improvise while on stage.
Its been a while since I did this topic, but I believe it was mostly because under communism there was little work for intellectuals, so they were often the ones who left the country. This resulted in a 'brain drain', a lack of knowledgable people. I seem to remember reading about the entire maths department of a university just up and leaving at one point. You could also argue that it was damaging for the image of communism if so many people were trying to leave.
Answer:
Option: The Southern economy became increasingly dependent on large-scale farming.
Explanation:
Increasing large scale farming led the Southerners to become dependent on slavery. The south had large estates with land to cultivate which they called plantations. Each plantation grew cash crops to meet the requirement of the European markets and to generate wealth. To grow crops labors was necessary to support the tobacco trade. In 1650, about three hundred Africans living in Virginia which later increased with the Transatlantic slave trade from Africa to the Americas in larger extent.
Throughout the history we can see a trend of giving citizenship to more and more people, rather than just to elites. For example, in the early stages of history only men possessed citizenship, and also significant portions of societies did not have the country's citizenship, such as in the case of slaves.
