Why do East and South Asia form a region? Check all that apply.
A. They have the same forms of government.
B. For thousands of years, Asian civilizations were separated from
Europeans and Africans.
C. The earliest civilizations developed along the Indus and Yellow
River valleys in India and China.
D. They both have natural barriers like the Himalayas.

B. For thousands of years, Asian civilizations were separated from

Europeans and Africans.

D. They both have natural barriers like the Himalayas.

Explanation:

The reasons East and South Asia form a region is because of the following:

1. For thousands of years, Asian civilizations were separated from

Europeans and Africans - Over the years in human history, Europe and Africa had little or no contact with East and South Asia. Thereby, the region developed its civilizations and ethnic groups in its way or pace. This also made the region not form part of the advancing and conquering powers of the Mediterranean empires such as Rome, Egypt, Greek, etc.

Also, they both have natural barriers like the Himalayas which joined the two regions together as the Himalayas is formed between many countries in the area, including present-day China, India, Bangladesh, Nepal, etc

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

answer; basic psychology;