What is the name of the individual credited with devising levels of measurement in which different measurement outcomes can be classified?

In Timeline: The Immigration Debate, which of the following allowed illegal aliens living in the United States continuously as of a certain date to apply for legal status?

a. 1965 Immigration Act b. 1977 Immigration and Nationality Act c. 1986 Immigration Reform and Control Act d. 1990 Immigration Act

What did the Indian Removal Act of 1830 do?

a. It established the first Indian reservations.  b. It excluded all Native Americans from land west of the Mississippi River.  c. It forced Native Americans to move to land west of the Mississippi River.  d. It removed all Native Americans from the armed forces of the United States.