Window cleaners that work the top floors of high-rise office buildings are, on average, paid approximately 30 percent more an hour than those that clean windows on the bottom floor. this is an example of

The answer is compensating wage differentials.

Explanation:

The term refers to an extra amount of money that should be offered to a worker in order to perform a difficult, dangerous or undisirable job. On the other hand, it's also possible to offer a negative differential for jobs that may be desirable or easy to perform (they get paid less).

Some factors to consider are risk of injury or risk of future unemployment.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

no questions on whether they are allowed that right