They mainly focus on protecting the U.S but if they hear word or find something out they will share the information w allied countries.
Periphery countries in world systems theory, also referred to as just Periphery
Answer:
Intergenerational mobility
Explanation:
When a change of socio-economic status takes place in between generations it is known as Intergenerational mobility.
Here, Sarah is from a lower-middle-class family i.e., her parents belongs to the lower-middle-class. Sarah became a doctor with the help of a scholarship. She was earning more than what her parents were earning. So, she moved up to the upper-middle class. This happened between her and her parents generation.
Hence, Sarah's movement is best described as Intergenerational mobility.
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