The U.S. became a superpower around the turn of the twentieth century. This was because the U.S. was able to create a stepping stone to the commerce of t<span>he Immigration Restriction League of the 1890s, Chinese Exclusion Act of 1882, as well as anti-Irish sentiments. Hope this helps.</span>
The U.S. became a superpower around the turn of the twentieth century. This was because the U.S. was able to create a stepping stone to the commerce of