Answer:
a. climate change
Explanation:
Kyoto Protocol is an international agreement which is an emphasis on the 1992 United Nations Framework Convention on Climate Change which is concerned and committed to reducing greenhouse gas emissions.
The Paris Agreement also talks about reduction of greenhouse gas emission. This makes the two agreements associated with climate change.
Silk was unavailable there, it was a Chinese secret, like gunpowder, and the horses wee considered better than theirs
Answer:
Because they were beside the ocean
Explanation: