The term 'invisible hand' was first used by Adam Smith in the 18th century to describe the efficiency in the autoregulation of free markets, where free means not externaly intervened by governments. Intervention distorts markets and harms the efficiency of their functioning.
The main principle behind is that, when individuals pursue their "private" efforts they are generating larger wealth for society as a whole than if their first intention was to help society. The markets will be in charge of channelizing individuals interests into socialy desirable outcomes.
The correct answer is A positive correlation
Explanation: A positive correlation indicates that the two variables move together, and the relationship is strong the closer the correlation gets to one. A negative correlation indicates that the two variables move in opposite directions, and that the relationship also becomes stronger the closer to minus 1 the correlation becomes.
Public speaking, I guess.
Framers of the Constitution created a system of checks and balances so no one branch of government would be more powerful than the others.
The answer is mesosystem. The mesosystem is the second level
of Bronfenbrenner's ecological systems theory. The mesosystem consists of
interactions between two microsystems. Like microsystems, mesosystems affect
the child directly. That is, the child is actively able to engage and socialize
with others in the mesosystem.