Rapid urbanisation and comparatively high poverty (lack of access to clean drinking water, so plastic bottles are used) lead to more and more waste without proper waste management catching up.
Almost all plastic in the ocean comes from 10 rivers - 2 in Africa (Nile and Niger) the rest in Asia [0]
See this report: https://wedocs.unep.org/bitstream/handle/20.500.11822/21134/...
Rapid urbanisation and comparatively high poverty (lack of access to clean drinking water, so plastic bottles are used) lead to more and more waste without proper waste management catching up.
Almost all plastic in the ocean comes from 10 rivers - 2 in Africa (Nile and Niger) the rest in Asia [0]
[0] https://www.dw.com/en/almost-all-plastic-in-the-ocean-comes-...