What are some negative effects created from the invention of printing? How do you think that these problems were handled?

They created harmful inks that were considered toxic.

It also contributed to environmental pollution

Explanation:

I think they invented inks that weren't harmful and they removed these waste that were harmful to the environment.

Hope this helps:)

answer; the masks were used in rituals and celebrations, some tribes wore animal masks as a way of thinking the animals for their gift of food;