Great Britain and the Soviet Union
Answer: There is pollution in the east river
Explanation: If we think about it cant be a lack of food as it talks about having a large food source. Nor can it be climate change as that would result in a low yellow Perch population. it cant be they aren't able to catch the bird. So the only logical answer is a pollution that the birds are adapted to.
Chinese people not working hard because of using opium
Answer:
The invention of the printing press increased literacy rates throughout Europe.
Explanation:
Pieces of literature became more common as it was easier to produce now, allowing the general public read more frequently.
Answer:
because humans are inherently greedy and and self-centered.
they saw that many people became prosperous while they did not. they saw communism/socialism as a way to equalize everybody.
Explanation:
