Immigration is the act of coming to a foreign country to live. The act of
leaving one's country to settle in another is called emigration. Immigrants who
flee their country because of persecution, war, or such disasters as famines or
epidemic are known as refugees or displaced persons (DP's). Most people find it
very hard to pull up roots in their native land and move to a strange country.
But throughout history, countless millions of people have done so. The heaviest
immigration worldwide took place from the early 1800's to the Great
Depression-the economic hard times of the 1930's. In that period, about 60
million people moved to a new land. Most came from Europe. More than half
immigrated to the United States. Other destinations included Canada, Argentina,
Brazil, Australia, New Zealand and South Africa. Today, the availability of
fast, safe and cheap transportation helps make migration easier. Asia is
replacing Europe as the major immigrant-sending area. The United States remains
the chief receiving nation. People forsake their homeland and
move to another country for various reasons. The main reason
for immigration has long been economic opportunity-the lure of better land or a
better job. During the 1800's, for example, the rich prairie land of the United
States and Canada attracted many European farmers. Today, professional people
commonly emigrated because of better opportunities elsewhere. Such emigration
has sometimes been called brain drain. For example, many Philippine doctors and
nurses and numerous Indian engineers and scientists have moved to the United
States and Australia. Religious persecution has led many people
to move to a new land for the freedom to practice their faith. Such immigrants
include Jews expelled from England in the 1200's. Wars,
revolutions, and political unrest have driven innumerable people to find new
homes. In the 1990's alone, millions of refugees fled from .warfare in Iraq,
Rwanda, Liberia, and Bosnia-Herzegovina. Some immigrants were
brought to a new land against their will. From the 1500's to the 1800's,
Europeans shipped black Africans to the Western Hemisphere as slaves. The United
Kingdom transported convicts to Australia from the late 1700's to the 1860's to
relieve over crowding in British jails. Before that time, the United Kingdom
sent convicts to the American colonies. Immigrants have made
enormous contributions to the culture and economy of such nations as Australia,
New Zealand, Israel, Argentina, Brazil, Canada and the United States. But their
accomplishments have been made with great difficulty. Many of the receiving
countries have restricted immigration to maintain a homogeneous society in which
all the people shared the same ethnic, geographic, and cultural background.
Although some immigration laws have been relaxed, many newcomers of different
backgrounds still face challenges in gaining acceptance.
单选题
Most immigrants to the United States in the nineteenth century came
from ______.