Which populist platform appears to have been most important to lease?

The Populist platform that Mary E. Lease was known for was called the People's Party.

Hope this helps.

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