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The Milky Way galaxy has collided with several other large galaxies in its lifetime.
Productivity
The measure of the efficiency of production, often calculated as the ratio of outputs produced to inputs used in the production process.
Capital Goods
Long-lasting goods that are used in the production of other goods or services and are not consumed in the process.
Economic Growth
A growth in the economy's output of goods and services over time, typically evaluated through the Gross Domestic Product (GDP).
Underemployment
Refers to the employment of workers in jobs that are below their skills level or part-time workers who would prefer to be full-time.
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