What does Burnett mean when he said “The long painful journey to the west ended March 26th, 1839, with four-thousand silent graves reaching from the foothills of the Smoky Mountains to what is known as Indian Territory in the West” HELP ASAP!!

There is lots of evidence

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.