The large air mass that is moving into the area is a continental polar one. As we can see on the map, the air mass is moving in from the northern part of North America toward the Central part of North America. It is an air mass that has been formed over land, thus it is a continental one, and since it has been formed on a very high latitude it is a polar one too. This type of air mass brings in very cold weather, often resulting in large amounts of snowfall as well, thus it is causing severe snow storms.
The European Nations left South East Asia during the 19th century.
The reasons include the presence of indigenous religions, western education, and the effect of socialism and communism.
<u> Explanation:</u>
European nations such as Portugal, Spain, Netherlands, Great Britain, and France had colonies in South East Asia. During the 1500s and 1600s, Europeans were able to gain power over South East Asia through trade and commerce.
The southeast Asian countries achieved nationalism through various approaches. The Buddhist and Islamic supporters of Burma and Indonesia respectively initiated national movements.
In Burma, new western-educated elite joined hands with Buddhist Monks and with other Burmese people.
In the Philippines, western-educated leaders fought against Spain. In Malaya, educated Malays were motivated into Civil service.
Meanwhile in Indonesia, the people who were educated from Dutch schools formed the P.N.I - Indonesian Nationalist Party. Communist and socialist activities played a massive role in Indonesia, Vietnam, etc.
A common rock type found within oceanic crust is called basalt rocks. It is dark just like an igneous rock and it is basically a type of lava from a volcano.
Relatively steeper than the shelf, the slope angles down to the ocean basin at an average of 4 degrees in some areas, the angle may be as much as 25 degrees.
