Overcrowding and slums developed in many impoverished countries in the 20th century, mostly due to large migrations to cities from people looking for work.
El Mar Mediterráneo es un mar que ha tenido una gran importancia para el desarrollo de la humanidad y de su cultura, siendo un lugar donde se crearon varias de las grandes civilizaciones que marcaron la historia.
<span> </span><span>socialist market economy
communist party
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Answer:It led to the formation of one global super continent.
Explanation:Imma nerd and asian trust me :)
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