Why did the wars and revolutions in China and eastern Europe lead to increased immigration to the United States?
A.) They disrupted the lives of people in those regions.

B.) They were followed by a drop in prices for farm goods.

C.) They demonstrated that only in America could people find opportunity.

D.) They enabled railroad companies to recruit workers from their homelands.

European emigration is the migration of Europeans to other continents. It was an especially intense movement in the colonial era, during the European wars and dictatorships, due to the demographic increases of the European population and the economic crises, famines or political repression in the continent. The reversal of these factors in Europe has changed the sign of the migratory balance, with Western Europe currently a region receiving immigrants. Some emigrated in search of adventure, work, that is, expectations of the future. Several European immigrants settled permanently in the new lands, created new nations and moved the culture and part of Europe's heritage. During the wave of European immigration to the American continent between 1870 and 1930, the countries that received the most Europeans were the United States with 27 million.

Chinese immigration in the United States is a group of overseas Chinese who are part of the Asian-American community. Within this community, the American term of Chinese origin often in a broad sense includes not only immigrants from mainland China, Hong Kong, Macao, Taiwan and their descendants, but also immigrants from overseas and descendants of Chinese who migrated to China. United States from Vietnam, Malaysia, Indonesia, Burma, the Philippines, among other countries.