Answer: they brought new species of plants and technologies. Also, they caused political innovations.
Explanation:
Migration can be defined as the movement of people, animals or things from one place to another with the intent to settle.
Between the year 1815 to 1932, about sixty(60) million people left Europe.
When European migrated then, into oceania africa and the americas, the effet the migration had on those regions was mainly POLITICALLY inclined(particularly in Oceania Africa) and in the process technologies were being introduced into the region.
There was mass emigration of European to America regions in the nineteenth and twentieth century. This is because of demographic transitions.
