Why was copernicus's theory seen as radical

Copernicus's theory was seen radical because it was called the previous arguments presented by previous thinkers to be put into a question.

Cherokee  removal, part of the trail of tears, refers to the  forced  relocation between 1836 and 1839 of thecherokee  nation from  their lands ingeorgia, south carolina, north carolina, tennessee, texas, and alabama to the indian territory (present day oklahoma)  in  the thenwestern united states, and the resultant deaths