The Congress of the United States was established by Article One of the U.S. Constitution. According to this article, the U.S. Congress is bicameral and thus Congress has consisted of two houses known as the Upper and the Lower houses (the Senate and the House of Representatives). This Article provides the U.S. Congress with some specified powers and the ability to enact legislation "necessary and proper" to exercise those endowments. The legislative powers of Congress are enumerated in Section VIII of Article One.
The "new immigrants" who immigrated to the United States after the Civil War primarily came from all of the following countries except "Poland", since the other three nations from the list were far more prominent.
