Which scientific concept had the greatest role in providing a justification for imperialism in the late nineteenth and early twentieth centuries

nope.

explanation:

an era of negotiation.

is that an answer to your question?

`stare decisis is a legal doctrine that obligates courts to follow historical cases when making a ruling on a similar current or future case. stare decisis ensures that cases with identical facts be approached in the same way, unless overruled by the same court or a higher court such as the us supreme court. simply put, it binds courts to follow legal precedents set by previous decisions.

stare decisis is a latin term meaning "to stand by that which is decided".