What percentage of americans can trace at least one ancestor to ellis island?

40%

Explanation:

It estimated that around 40% of the Americans trace their at least one ancestor to Ellis Island.  Ellis Island became to be known as the gateway to America for the immigrants who came in the late 1800s. The island facility processed more than 12 million immigrants until November 1954, when the immigration stopped by the Government by closing Ellis Island.

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.