Final answer:
The biggest growth in international migration to Texas in 2018 came from North America, primarily Latin America and the Caribbean.
Explanation:
The region of the world that accounted for the biggest growth in international migration to Texas in 2018 was North America, particularly with a significant number of immigrants coming from Latin America and the Caribbean. This trend is in line with the broader pattern of migration globally, where nearly 70 percent of all migrants in 2015 originated from Europe or Asia.
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