The Navajo code, which was not really a new code, was used during WWII.
The Navajo code could not be deciphered because it wasn't a code at all it was the native language of the Navajo.
Answer:
Among the waterways linking the lakes are the St. Marys River, which flows from Lake Superior to Lake Huron; the Niagara River, connecting Lake Erie to Lake Ontario; and the narrow Straits of Mackinac , joining Lake Michigan and Lake Huron (hydrologically, the two lakes are considered a single body of water).
Explanation:
I think that a territory could become a state when it reaches a population of 150,000.
