Answer:
Because if you keep trading something your low on supply of you will run out and be left with nothing
Explanation:
In 1937 would be the answer.
Uhm maybe A?idrk i don’t remember
The plan is, of course, I actually organized by nature in to continents and oceans and one way of representing this is by the globe displaying a spherical World imitating the planet with all the displayed continents and with the oceans and wide islands interfering and with all the names shown by the oceans in continents.