Lincoln saved the republic and ended slavery. I know modern liberals believe that he is nothing like the conservatives of today, as he fought to keep the federal power, but you have to look at the
means for change that define conservatism versus liberalism in political theory: the issues of the day and positions shift along with the culture, and conservatism isn't about obstructionism (current partisan politics not withstanding, and liberals are just as much to blame for this team vs. team mentality[take such a polemic and inflamatory baiting like this very thread for example]). Lincoln would have freed ALL the slaves immediately, not just the ones in the south, if he was a liberal and not a conservative. True conservatism can be noted by the paramount focus on pragmatism and measured pace for social change. Take Edmund Burke for example. Anyway:
Eisenhower built the highway and interstate system.
Patrick Henry, James Monroe, and Samuel Adams and all the others conservative founding fathers were there beside their liberal counter parts to make America.
Reagan won the cold war, and peacefully.
Teddy Roosevelt busted up the trusts.
Henry Kissinger established relations with China and is one of the most noted statesmen of the 20th century.
Mostly we just work hard and smile, conducting business and providing and protecting the country.
This is just off the top of my head, and just from America. Think outside of politics too: many of the best conservatives shun politics and focus on business instead and have been a great part of what has made America great, not just her ideals and values, but her ingenuity, enterprise, and determination. Innovators like Henry Ford that provided this generation with unprecedented levels of material comfort. Conservatives are well represented in the sciences too, particularly the physical and material sciences.
It's easy to claim responsibility for the advancements in cultural maturity because liberals were pushing for them faster and less warily than conservatives. We've been there the whole time, providing a necessary guardianship to keep the liberal dreamers accountable and rooted in the real world, remembering that you need to understand things are the way they are, not the way they ought to be yet. If left alone, liberals always go off the deep end. Just like you need us to keep you honest, we need liberals to keep us from accepting ruts and institutionalize 'good-enoughs'. Lots of talking and little action is the essence of the democratic process. If you want swift and decisive action you need consensus, or a King.
The TLDR: Democracy needs both liberals and conservatives both to push ideas through the crucible. Laying a claim to any of America's successes by any party--alone--is little more than political rooting for one's favored team.
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He who laughs last thinks slowest.
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