I would say A. It would be difficult to find workers for jobs that people didn't desire. Like how minorities pick produce nowadays and you don't hear of white people picking produce.
Alfred Thayer Mahan was a United States naval officer, historian, and one of the most influential American authors of the nineteenth century.
He argued that modern navies needed repair and coaling stations, which would not be dependable if controlled by other nations. This reasoning implied a justification for American acquisition of colonies to develop port facilities throughout the world.
<span>The main responsibility given to the Caliph in the first duty is to protect the entire faith of Islam, in a manner that represents the wishes of the very first Muslims. </span>
The reaction can take from several hours to several days
Answer: This might not be what you were looking for but this website gives you 4 examples and there's a video to watch.
https://nmliving.com/2016/08/21/legendary-new-mexico-technology/