The ideas of democracy. The discovery of use of water power.
The ideas that Sun is center of solar system.
I think it's just important to continue growing our population. If you're talking about animal population I believe we shouldn't really do anything. I'm a believer and I believe that this world is going to end anyways. Even if we try to protect the animals, it's all for nothing. I don't really find any policies enacted to discourage growth shocking or anything. I haven't really heard or any lately or as far as I know, but our population is expanding and we must do something about it. Some people are against growth because they want to protect wild lands for animals and keep them safe. I have no problem with that but we have to do something.
Plessy v. Ferguson, 163 U.S. 537 (1896), was a landmark decision of theU.S. Supreme Court issued in 1896. It upheld the constitutionality of racial segregation laws for public facilities as long as the segregated facilities were equal in quality – a doctrine that came to be known as "separate but equal
A. Liberal democrat
Seeing as democrats fall on the left of the moderate (middle) position that would be your answer.