How to use "conquered" in a sentence

Compared with the perils which our forefathers conquered, because they believed and were not afraid, we have still much to be thankful for

"If I understand you, the Chinese could use Wuhan-400 to wipe out a city or a country, and then there wouldn't be any need for them to conduct a tricky and expensive decontamination before they moved in and took over the conquered territory."