Is there a link between race and intelligence? Like, after controlling for any other variable...

It's not impossible, but the jury is still out and it's such a politically charged question that it's unlikely we'll have a real answer any time in the near future. That being said, it's nowhere near as obvious a "no" as the PC crowd will screech at you.

www1.udel.edu/educ/gottfredson/30years/Rushton-Jensen30years.pdf

Though I do have a big issue with the Rushton Jensen results in that they lump "black" into a single group. People from Africa have the highest levels of genetic diversity in the world. There is no "the" blacks to put into a single sample, and minimally one needs to partition this in a sensible way.

The answer is probably much more complicated than either political side wants to hear about.

So why did Germans have such an inferior and tribal culture before being civilized by greece and Rome?

Dude, any other HS test in the world would be more complicated than the SAT, including (especially) the African ones. Americans that haven't specialized in math just tend to suck more at it than average. It's probably better this way though.

It is there to no less extent than athleticism is.
Checkmate equalists.

en.m.wikipedia.org/wiki/Minnesota_Transracial_Adoption_Study

This study found a very strong link between race and IQ, though it was unceremoniously declared "inconclusive" for weird reasons.

No. Sociology is an impossible size. There have been no controlled studies of babies of different race under the exact same environment.

Because the data could be use to support either hypothesis that it was a genetic factor or the social environment.
Also, deviations of 10% are not "very strong links"

define race
>inb4 american blacks and american whites
Realize that these are generally not even considered pure within their ethnic groups, let alone the distribution of their non-scientifically measured "race"/genes

TL;DR
>muh psuedoscience

if the answer to that was comfortable, there would be a study done about it that could shut down these questions. but there isn't.

I know some syrian guy whos really really good at math, way better than any other student and i live in germany by the way