Hey there! I'm happy to help!
One reason conquistadors failed to establish colonies is that the Natives kicked them out. Many of the aboriginal people were very powerful and could easily get rid of the conquistadors.
Conquistadors could also run out of resources. Nothing lasts forever, and if they couldn't obtain enough resources while exploring and settling it would be hard to establish a colony easily.
There could also be dangerous things that could hinder the settlements such as wild beasts, natural events, and diseases.
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The answer to this question is "Civil rights and feminism"
Answer:
harmful
Explanation:
pesticides are harmful to everything. It can causes human lungs and liver failure. On the other hand, it also poses a long-term threat to the nature
