Answer:
The first person in American was probably a Native American who crossed the land bridge.
West Africa, Equatorial Africa, East Africa, and Southern Africa.
Well, sadly, it is effective when it doesn't result in disaster.
Brinksmanship refers to the negotiation practice of letting a situation edge right up to disaster before finding a solution.
It is, however, wildly irresponsible, shortsighted, and often leads to people getting hurt and unnecessary stress.