A lot of bigoted American evangelicals don't consider Catholics to be Christian, as amusing as that is. The same goes for Jehova's Witnesses and Mormons. I agree that Muslims aren't all that different from Christians, but Muslims do not believe Christ was divine. Cake please.
No cake for you. If Muslims were Christians, they wouldn't be the Christians who don't believe Jesus=Christ is divine. For instance, the Jehovah's Witnesses and Unitarians. Did you really think it'd be that easy?
And if you're trying to use a standard where Catholics aren't Christian, then there never was a thousand year period of Christendom, so the entire statement is meaningless.
Yes you can weasel out of the dark ages by picking a few minor advancements (mostly in warfare) and saying "look, that's *something*!", but really, there was a thousand years of not much.
Christendom != Western Europe and learning != science. Thank you, come again.
If you really think Christianity is a religion of learning, I'd invite you to remember Galileo, Torricelli, Darwin, the Vatican's stance on the efficacy of condoms in preventing AIDS and toward biotechnology in general.
Okay, I will.
Galileo was a case of a socially incompetent engineer who came up with a brilliant way to fuck himself up in the complicated political situation of his day. Remember that heliocentrism was reintroduced to western thought by a Catholic clergyman and that Galileo had nowhere near the evidence he needed at the time to counter the perfectly rational objections to his theory; the Catholic Hierarchy was asking for that more than for him to "toe the line". If you really want, I could come up with examples when the general scientific community rejected theories that are now accepted and ostracised their promoters, because there wasn't the evidence. The first examples I can come up with are the Big Bang and continental drift.
Darwin, Lamarck, and all the other people who have derived theories of evolution have faced a certain degree of hostility from some Christians. But like I just pointed out, people who have proposed scientific theories have faced hostility from scientists, and on the other hand many people who promoted these ideas were members of the Church. Opposition to evolution of any sort has generally been limited to a small minority of Christians who simply happen to be very loud in America. I think everyone would be better off if they just ignored those idiots, instead of encouraging them by falsely pretending their ideas have any widespread currency in religion. (Darwin was a bit of an odd one out here, because the others are or presumably are referring to the Catholic Church. Of course, the Catholic Church has inherited a long tradition of non-literal interpretations of the creation story (including instantaneous and continuous), a position which is strictly speaking biblical beacause there are at least two contradictory creation stories, maning it is absolutely necessary if you believe in divine inspiration that at least one version is meant to be interpreted non-literally.)
I've never heard of Torricelli. I just checked up on Wikipedia, and it has no reference to his relationship with the Catholic Church. He apparently died at the age of 39, which is suspiciously young, but there's no explanation as to why. If he was executed for his scientific views though, why doesn't anyone talk about that? For him, I will reserve my judgement. (I have assumed you refer to the Italian physicist and contemporary of Gallileo.)
As to the Vatican's teaching on AIDS, I really can see no way that you can claim that you are more likely to get AIDS if you don't have sex, than if you have sex with condoms—which in practice let one or two women in ten have babies every year, mostly through improper use.
Concerning biotechnology, and I assume you refer to the Catholic Church's position in particular on stem cell research, to pretend that there is any sort of scientific conclusion about ethics and personhood demonstrates a distressing level of ignorance of science and ethics. In any case, the Catholic Church is certainly interested in promoting learning if it helps people live—but not if it requires killing what they reckon are people first.
There. Satisfied? Well, I guess not, because I have opinions that follow the evidence instead of knee-jerk anti-Catholicism.