Pinning concepts like "science" and "freedom" to a specific era is a silly endeavor. But if you had to, neither would originate in Christian Europe: science as a concept predates Christianity by at least 800 years; the thing we call "freedom" today didn't take shape until 1600 years into Christian Europe's development.
Christianity, like just about every religion, has made invaluable contributions to philosophy. But it's ahistorical, to an embarrassing degree, to attribute such broad concepts and bodies of inquiry to it.
Without philosophy, there is no Hegel, without Hegel there is no Marx, without Marx there is no Lenin, without Lenin, there is no Stalin, without Stalin there is no Cold War, without the Cold War there's probably not a war in Ukraine right now, and without a war in Ukraine I wouldn't be worried about my gas bill. I think that's pretty concrete.
(Just a single, rather obvious example. Easy enough to find others.)
