Answer: Externalities are side effects (good or bad) that occur when a person or a company performs an activity and does not assume all the costs of it, or all the benefits that could be reported. In this way we can distinguish:
Negative externality: Arises when not all the costs of a negative effects are assumed. In these cases, a social cost is generated, since it is the whole society that suffers the consequences of its actions. And the market price does not collect this cost.
Positive externality: Arises from a positive effect that is not reported as a benefit. An example of positive externality that we can mention is scientific research, from which society in general benefits. In these cases, market place do not reflect the real benefits.
Any practices should best be based on a research - this is the correct answer. (a. child development and research) Research is the best source of actual knowledge, rather than people's best guesses (people's best guesses might lead government regulations, but it would be better if they also followed research results.).
They grew things like tobocco, corn, maize and other crops... like wheat
Answer:
https://www.energy.gov/articles/history-light-bulb
Explanation:
The Ku Klux Klan, founded in the late 1860’s, experiences three major surges in popularity promoting ideals such as white supremacy, white nationalism, Nativism, anti-immigration, and anti-communism.
The first era of Ku Klux Klan experienced a rise in popularity in the late 1800’s with the intent of overthrowing Republican state governments in the South and ensuring that newly-freed southern African Americans did not vote. In 1871 their membership was oppressed by federal law enforcement (1871 Ku Klux Klan Act signed by President Grant to combat the KKK and other white supremacy groups).
The second Ku Klux Klan group flourished nationwide in the 1920’s on the platform of pro-prohibition and anti-Catholicism and anti-Jewish feelings. They experience a diminished population in the late 1920’s (around the time of the Great Depression; a time of mass American economic hardship).
The modern-day third wave of the Ku Klux Klan came about in the late 1950’s opposing the civil rights movement. Current membership, as of 2016, amounts to an estimated 3,000-6,000 active members.
