Which famous composer was the first to play concerts for the entire public, not just for the wealthy? he referred to this as "a liberty of music."
a.
bach
c.
mozart
b.
haydn
d.
handel

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

porter is writing economic history because he is focusing on the cost of developing vaccines.