To categorize the countries based on the provided economic activities, we can place them as follows:
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The world's leading producers of semiconductors: Malaysia
- Malaysia is known for its significant role in the semiconductor manufacturing industry.
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Has become a leading financial center: Singapore
- Singapore is renowned as a leading global financial hub.
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Consists of primarily low-wage and low-skilled jobs: Vietnam
- Vietnam has a large labor force with many jobs focused on low-wage and low-skilled labor, especially in manufacturing.
So the categorization will look like this:
- The world's leading producers of semiconductors: Malaysia
- Has become a leading financial center: Singapore
- Consists of primarily low-wage and low-skilled jobs: Vietnam