Settle In and Take This Quiz on U.S. Immigration

There are more than 750,000 Americans currently living in Mexico, the highest number of any country in the world. In fact, roughly 400,000 of those people live in Mexico City alone, making it the single urban environment with the most Americans outside of the United States. After Mexico, American expats most commonly settle in Canada, the U.K., Germany, and Australia.

After serving as a military reserve during the Civil War and World War II, Angel Island was repurposed into an immigration station in the early 1900s. The island, which is located in the San Francisco Bay, is estimated to have processed up to 1 million immigrants between 1910 and 1940, including 250,000 Chinese people and 150,000 Japanese people heading to the United States.

Forty-five percent of Hawaii's immigrants and 32% of Alaska's hail from the Philippines. For Hawaii, that means that nearly one out of every 10 people living in the state was born in the Philippines. The two states are geographically the closest U.S. states to the Philippines.

There are about 11.2 million immigrants from Mexico living in the United States, which is roughly 25% of the entire U.S. immigrant population. After Mexico, the top countries of origin for immigrants are China, India, and the Philippines, each of which is the birthplace of between 2 million and 3 million immigrants to the U.S.

The Oath of Allegiance, which is codified in the Immigration and Nationality Act, says that applicants will: support the Constitution, renounce allegiance to other foreign states, defend the Constitution against enemies, and fight for the U.S. if drafted. The oath is commonly administered during applicants' naturalization ceremonies, and after its completion, those who took it become U.S. citizens.

There are approximately 1.5 million Cubans in the United States, with more than two-thirds of them living in Florida. The Sunshine State's close proximity to the Caribbean country makes it a popular destination for Cuban immigrants, who have transformed the culture of the state itself. Miami, Florida, even has a neighborhood named Little Havana after the Cuban capital.

The term "melting pot" was first used to describe American culture as the title of a 1908 play by Israel Zangwill. His metaphor, which had been invoked before in other terms, described the assimilation of immigrants into America's multifaceted culture. In 1782, one French immigrant described the United States as a country where "individuals of all nations are melted into a new race of men.”

The Statue of Liberty is one of the most recognizable images representing America. On its pedestal is a plaque inscribed with the poem "The New Colossus" by Emma Lazarus. Her words describe Lady Liberty as the "Mother of Exiles" who cries with silent lips, "Give me your tired, your poor, your huddled masses yearning to breathe free," as she welcomes immigrants into the United States.

Permanent Resident Cards are called "Green Cards" because, well, they're green. The identification cards resemble a standard driver's license and have a green background with the American flag and the Statue of Liberty on top. Having one of the cards allows a person to live and work permanently in the United States. Recipients are often chosen through family or employer sponsorships or via a lottery.

Ellis Island opened as an immigration station in 1892 and processed immigrants until its closure in 1954. During that 62-year run, more than 12 million immigrants to the United States passed through its doors. During its peak years, the station processed an average of 1,900 people each day, and some estimates say that 40% of all current U.S. citizens can trace an ancestor to Ellis Island.