Write a paragraph explaining immigration in the United States. Use at least 6 words from the list below.

While the share varies from year to year, roughly two-thirds of legal immigration to the United States is on the basis of family ties, with the rest divided between employment-based and humanitarian immigration and those arriving through the green-card lottery (also called the diversity visa).

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Explanation:

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.

an early twentieth-century ad for model home blueprints