Answer:
Explanation:
The medieval Russian state was left vulnerable to invasion because of fighting between noble families and because of declining trade with the fading Byzantine Empire. The Mongols easily overwhelmed the Russians. The effects of their rule were mixed: while they brought peace to Eurasia and opened up trade routes for Russian traders in this region, they also imposed cumbersome tribute payments, established a precedent of absolutist, centralized rule, and cut off contacts with Europe, slowing the spread of scientific and artistic advancements.
A.
But technically, the U.S.'s largest trading partner is the European nations, with 270k exports, compared to Canada's exports - 310k.
It would be the second one; the power of the purse
B.contract between europe and the far east had increased
Answer:
Hi hope this helps
Ecology-the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.