How do scientists confirm their conclusions when they use the scientific method?
they state their problem.
they assert a belief.
they repeat their work.
they gather data.

They gather data, simple as that.

Explanation:

They ask different science communities to check their work and come to a conclusion. The universe, for instance -- which we do not quite understand, theories have helped us to get a perspective. Even though no one knows how and why the universe began, we tend to believe in the Big Bang Theory.

Read about "falsifiability" and you might understand a more!

GOOD LUCK

D.

answer; /// i do believe that its napolean's conquest of spain;