I think that the answer is Indo-European.
Answer:
When a warm air mass moves into an area of cooler air, the boundary between the air masses is called a warm front. The warmer, less-dense air slides up over the cooler, denser air in a wide, gentle slope. As the warm air cools, its relative humidity increases, and the water vapor condenses into clouds.
Explanation:
<span>El Nino
</span>A change in the water temperature of the eastern Pacific Ocean that produces cooler than usual surface water temperatures. An unusually long period during which rainfall is below average. Used by NOAA to collect data to predict an El Nino<span>.</span>
Answer:
Better life
Explanation:
The quality of life is better in Minnesota than Vietnam so that may be a reason why citizens from Vietnam to immigrate or move to Minnesota.