Microscopic anatomy involves the use of optical instruments in the study of the tissues of various structures, known as histology, and also in the study of cells. The history of anatomy is characterized by a progressive understanding of the functions of the organs and structures of the human body.
It was "<span>C. Vatican City" that was, and still is recognized as the world's smallest nation. Vatican City is where the pope lives and is a major tourist attraction in Rome. </span>
