Help with this i have one hour

Between 1518 and 1548, spanish conquistadores conquered most of the new world, motivated by the a) desire for scientific knowledge. b)  to urge to claim more territory for spain. c) belief that an all-water western route to the orient existed. d) desire to advance national glory, serve god, and seek personal wealth.

In a citizens elect the president as head of government separate loy from the legislature

What happens after a star goes supernova? just wondering! [tex]supernova [/tex] answer asap i really wanna know!