2018 06: United States Immigration, 1820-Present
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From 1820 to 2013, 79 million people obtained lawful permanent resident status in the United States. This month’s Map of the Month visualizes all of them based on their prior country of residence. The brightness of a country corresponds to its total migration to the U.S. at the given time. 1 dot = 10,000 people. Source: Metrocosm - Here's Everyone Who's Immigrated to the United States Since 1820 (includes animation showing immigration sources over time) - https://metrocosm.com/animated-immigration-map
创建时间：
2023-01-10
