How did Amelia Earhart's ideas impact history?

The ideas that Amelia Earhart advocated did in fact change
history, but it is not really accurate to say that they affected history
because of her.  She was one of the influences that allowed
the ideas that she believed in to move forward.

Earhart's
ideas were mainly concerned with the importance of flying and with promoting women's
rights.  Both of these ideas have changed the world since Earhart's
time.

For example, airplanes have had a huge influence for
good and bad.  On the bad side, they have been used as bombers to transform war and
cause huge amounts of destruction (WWII).  On the other hand, they have given us a great
deal of mobility and have allowed people to travel much more than ever
before.

If anything, the increase in rights for women has
changed things much more than airplanes.  The fact that women are now seen as
essentially equal to men has changed the lives of practically every person in America. 
It has changed the way we conduct our family lives and our marriages.  It has given more
opportunities to generations of women and has generally made our society more just and
equal.

Earhart did not cause these changes to happen, but
she and others promoted these ideas which have changed the
world.