The economic term is the opportunity cost.
The concept of opportunity cost is a relatively inexpensive and relative measure that involves people's preferences, so it varies from person to person. It is a question of comparing what is left over when making a decision.
In Katie's case, the opportunity cost of the money she saves to buy a car is what she fails to do with that money. For example, she stops investing in stocks, fails to make a trip, etc.
All decisions involve an opportunity cost. Taking another example, the opportunity cost of studying for the test at the end of the week is measured by the loss of leisure you would have. However, the decision to study for the test is chosen because it is more valuable.
I believe those ideas are: Natural rights and the right to own property.
Both of these ideas was brought from the enlightenment period where most society in Western Europe started to favor a government system where the citizens hold the majority of the power.
Natural rights is provided to protect the citizens ever since they are born and the government could not cross those rights under any circumstances. The right to own property was intended to give incentives to the private sectors so citizens could have control over the economy.
The regional people group that made the least amount of inter-island contact would be : Australians.
Interestingly enough, there is only two countries that exist in the whole Australian continents, the new Zealand and the Australian itself
Curfews in or around her area, crime rate of teens 18 and younger, etc.
