The scientists working on the manhattan project during world war 2 were responsible 1) designing weapons for the d-day invasion 2)building satellites to spy on the acis nations 3)creating biological and chemical warfare 4)developing the atomic bomb

Number 4 because the manhattan project dealt with atomic bombs

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