The atmosphere was filled with poisonous gases during the:
hadean eon
archean eon
protozoic eon
phanerozoic eon

23. how does specialization among nations encourage interdependence? nations work together to share labor and resources to produce vital goods. nations sign treaties prohibiting taxes on imports. nations produce specific goods and then trade to obtain things they need. nations that are more developed agree to fund development in nations with limited industry.

What was the goal of the united states' invasion at the bay of pigs?

Which prompted european exploration during the age of discovery quizlet