Some consequences include subsistence farming and <span>pollution</span>
Answer:
The answer is B
Explanation:
If the product you produce can make the most money when you sell it, you can trade it for a lot.
If you're referring to streams/rivers of water that run independently of another source in the ocean these are referred to as "currents" and can be very powerful depending on their location.
The answer to the missing blank above would be 'the Mongols'. The Mongols invaded Russia around 1300s, which arose to economic downfall and overall negative effect to Russia. Because of this, the Russian princes convened and fought to drive Mongols out of the country.
