There are 45 potential workers in this economy. how many people are unemployed?

The fraction of people within this 45 potential workers that  are willing and able to work for pay, currently available to work, and are commited in the seach for work.

Explanation:

Not every potential worker is an unemployed person. To be part of unemployment, the person must be able to work (be aged enough for example) and must be willing to work for a payment. This last condition means that the person must be determined to find a job by doing specific actions to get hire (like sending its curriculum vitae or resume, assist to work interviews, and else). If a person is not able to work (because it is too young for example) or is not willing to work (because it does not do anything concrete to find a job), is not unemployed.

Yes you are cute answer theories to explain the colonization of the new world the last great habitable landmass to be occupied by humans focus on the bering land bridge, or beringia, which emerge by siberia and alaska the last ice age.