Ⅰ. 서론
중세에는 기근과 함께 사람의 생존에 가장 큰 위협이 되었으나 19세기 말 미생물에 대한 이해 증가, 상수의 위생적인 처리, 위생, 곤충 및 설치류에 대한 구제로 감염병이 감소하였다. 20세기에 들어서면서 위생환경이 획기적으로 개선되고, 예방접종과 효과적인 항생제가 개발되 어 감염병은
- What is the Black Death?
"The Black Death", also known as the Black Plague was so named, because it changed the skin black. The sufferer's skin would darken owing to subepidermal hemorrhages and the extremities would blacken with gangrene at the site of glands. In the 14th century, this plague epidemic let 야ed more than one-third of the population of Europe in less than a few years. In some
'A watch that is more famous overseas,'
Romanson launched a wrist watch brand called "ROMANSON' in 1988 and began exporting to the Middle East Market. Since then, the company has built a global business network in 72 countries around the world, has achived export showings of $25 million, and continues to develop as a global watch brand.
Founder : Kim ki moon
Established Date : April 1,