Andromeda is an example of a <u>spiral </u>galaxy.
Answer is Option C
C. Archimedes.
He created simple machines and invited the pulley.
It was first proposed in the mid 1850s by doctor Ignaz Semmelweis who believed it would reduce mortality rates. It became a widespread thing around 1900 when everyone started doing it because they realized how important decontamination was.
<span>Muckrakers of the 19th century can be compared to some, but not all modern day journalists. Muckrakers were famous for "digging up dirt" on people and exposing them. Today's journalists do similar things, especially in the current political environment. However, today's journalists have it easier with the inventions of social media and the Internet. It's much easier to "dig up dirt" on people and expose them.</span>