Final answer:
The Homestead Act provided free land in the West and attracted immigrants to settle there.
Step-by-step explanation:
The act that provided free land in the West and interested immigrants was the Homestead Act.
The Homestead Act was signed into law in 1862 by President Abraham Lincoln. It offered 160 acres of free land to settlers, as long as they improved the land and lived on it for five years.
This act was aimed at encouraging westward expansion and attracting settlers to develop the western territories of the United States.
Learn more about Homestead Act