Is social security tax progressive regressive or proportional?

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.

Who gave the famous "i have a dream" speech at the march on washington?

What can you conclude about the information given here ? a)juveniles must testify in court b)adults are held to a lower standard c)the state guarantees that juveniles have legal rights much like those of adults d) punishment for juveniles violators are much more strict than those for adults