| A | B |
| Germ Theory | Scientists speculated that certain microbes might cause specific infectious diseases |
| Louis Pasteur | He developed a vaccine against rabies and anthrax |
| Robert Koch | He identified the bacteria that caused tuberculosis a respiratory disease that claimed 30 million lives in the 1800's |
| Anesthesia | Was first used in the 1840's to relieve pain during surgery |
| Florence Nightingale | An army nurse during the Crimean War. She insisted on better hygiene in field hospitals and later in life would start the worlds first school of nursing |
| Joseph Lister | Discovered how antiseptics prevented infection and insisted that surgeons wash their hands before operating and to sterilize instruments |
| Urban renewal | Rebuilding poor areas of a city |
| Mutual aid societies | Self help groups to aid sick or injured workers |
| Standard of living | Measures the quality and availability of necessities and comforts in a society |