Why did so many immigrants come to the united states during the 19th century?

During the 1800s, people in several parts of the world determined to flee their houses and migrate to the United States. Decamping crop collapse, country, and job deficiencies raising contributions, and starvation, many developed to the U. S. because it was regarded as the state of commercial opportunity.  Starting from the 17th to 19th centuries,  African vassals proceeded to America against their preference.

answer: 25.8 years old or 25 years old

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years