"love and money" .... have trended a long time.
that being said, there are long-lasting trends ... in the US, "home ownership" has trended for a couple hundred years ... in the western world, Abrahamic religions have trended for a few thousand years, with ups and downs and variations .... agriculture has trended for a loooong time
spoken language has trended for quite a while ... "marriage" has trended for probably almost as long.
tough to say, depending on what the "something" is