France and the United Kingdom agreed to support Poland and in August of 1939, German troops began to gather on the Polish border. By September 1st, Germany launched an invasion of Poland.
The brachial plexus is a network of nerves that originate in the neck region and branch off to form most of the other nerves that control movement and sensation in the upper limbs, including the shoulder, arm, forearm, and hand.
We can't all make the same, that would be unfair to the people who had worked at it longest. So, no Plexus is not a Pyramid Scheme. Yes, it works just like any other business, where the founders get paid the most, and then the next people down, and then the next people.