If a country is isolated, it will have to produce everything that it needs: especially food clothes and medicine. It won't be able to specialize, but it will have to focus on satisfying the needs of the people.
If it is not isolated, it can specialize in the things that it can produce the best and fastest, and hope to exchange it for the things that it can't produce.
H=88 G=92 K=91 M=89
How you solve this is G is the same thing as 92 because it crosses each other same thing with K. Then after that you just subtract 180 by 92 to get H because the line angle equals to 180 same thing with M
The answer is the spring equinox
Barley. Grains remain an important part of the Russian economy.