The answer to this question would be “Beringia”.
Today, Beringia<span> is the land and marine area bordered on the west
by the Lena River; on the east by the Mackenzie River; on the north by 72
degrees north latitude in the Chukchi Sea; and on the south by the tip of the
Kamchatka Peninsula.</span>
Answer:
language barriers,
unfriendliness of the people
poor transport system
poor communication system
illeteracy
I think its becuse of his surrender but before u put it in see what other people say
Hey bro sorry i know the answer but c