Yours seems to be one of those opinions that can be summed up as "lol Greeks good Romans steal" when there is no shortage of technology and civil law improvements the Romans brought to light. To mention a few: a senate, aqueducts, urban planning, sanitation, civil engineering much better than that of the Greeks (see domes and arches), many ideals that are still present in today's governments, farms of quasi-industrial level production, and so forth.
That the Greeks made more developments in Maths is true - it was more of a cultural thing anyway. Your post also completely ignores the fact that Greece flourished under Roman rule and managed to keep many of its freedoms, with the protection of a giant empire. Romans also distributed Greek texts to all corners of the known world, wherein learned people could be found.
Your comment seriously sounds like that of a child, not at all something of the level of HN.