How did technology help Europeans in their discoveries?

Answer 1

a) the technology of sailing ships enabling them to move around the globe
b) firearms technology enabling them to impose their power on other people
c) printing, enabling information about discoveries to be preserved and distributed
d) technologies of production (e.g. water powered mills) which gave Europe the economic resources to engage in voyages of discovery and colonization

Answer 2

It depends on whether you mean techonology they actually invented or technology they stole from the greeks and arabs.