What major event followed the Great Depression?

World war 2

The Great Depression had ended at last, and the United States turned its attention to the global conflict of World War II.

Yea I thin ink what she said

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.