What might have been the reasons people migrated across the planet?

PushPull factors. (jobs, war, sickness, money)

Explanation:

Push/Pull factors are reasons people leave their home to go to another place.

A Push factor is a reason somebody leaves.

examples are:

sickness

war

poverty

A Pull factor is the reason somebody might go somewhere else.

examples are:

jobs

money

religious freedom

hope this helped !

valentina tereshkova

soviet cosmonaut valentina tereshkova became the first woman to fly to space when she launched on the vostok 6 mission june 16, 1963. valentina tereshkova was the first woman to go into space. in 1963, she spent almost three days in space and orbited earth 48 times in her space capsule, vostok 6.jan 22, 2018