<span>The answer is....... C.earthquakes</span>
Answer:
NATO
Explanation:
NATO is an alliance between most of the Europeans countries and the US to a possible military invasion (in other words from a military invasion from Russia)
Answer:
Europe.
Explanation:
Migration refers to the movement of a group of people from one geographical region (location) to another geographical destination in search of better living conditions, work or social amenities.
Migration selectivity can be defined as the likelihood or tendency that a subset (part) of a group of people are going to move (migrate) out of a particular geographical location or area.
Some of the factors that influence migration selectivity are income level, age, education, gender etc.
Historically, most immigrants came from Europe and settled in the Northeast of the United States of America. In recent times, immigrants come from Latin America, Africa and Asia into the United States of America, settling throughout the country from the West to the South.
There are many geographical barriers that separate China from the rest of the world, including various seas, mountains, and deserts. There is the Gobi Desert (north), the Taklimakan Desert (west), the Himalaya Mountains (south), and the Pacific Ocean (east). China is also isolated by the three seas: the Yellow Sea, East China Sea, and the South China Sea. Also in the south, there is the Tibet, which is the highest plateau in the world. There is also the Great Wall of China, which has succeeded many times in keeping out invaders (built by Shi Huangdi).