Chadwick discovered the in 1932.
atom
proton
neutron
electron

john smith was the first englishman to sail around the world. francis bacon served as attorney general and lord chancellor of england. he took up aristotelian ideas, arguing for an empirical, inductive approach, known as the scientific method, which is the foundation of modern scientific inquiry.

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.