Which was a secular intellectual and culture movement based on ancient greek and roman philosophy

Renaissance Humanism was a philosophical and intellectual movement that was initiated by Italian poet and scholar Petrarch during the 14th century. It consisted on the restoration and renewal of all the artistic, scientific, philosophical and legal knowledge inherited from the Greeks and the Romans of Classical antiquity.

It was secular according to Medieval standards in that although it remained religious, it put human beings and their society at the forefront of every philosophical and political concern.

companies sell stock to their businesses grow and become "public"

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )