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With a semimajor axis of 18 AU, Comet Halley has a period of
Immigration System
The collection of laws, regulations, and processes that govern how individuals can enter, stay, and gain citizenship in a country.
Canada
A country located in the northern part of North America, known for its vast landscapes and multicultural diversity.
Population Growth
The increase in the number of individuals in a population, often measured as an annual percentage.
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