I want to know the answer to the following question:
Czechs immigrated from Europe to the U.S. primary from 1848 to when?
All the background I'm provided with is that "In the 2000 United States Census, Czech was reported as the most-common language spoken at home (besides English) in Valley, Butler and Saunders Counties, Nebraska and Republic County, Kansas.". Is that enough to answer the question?
Answer: no