There’s no way this stuff should be in 1st grade. First graders need to learn something about what is expected of them here and now, that is, the virtues. And connected with this, things such as honesty in political leaders, honesty in their selection, voting mechanisms, etc., mostly expressed through stories about the persons of important and inspiring figures such as George Washington and Abraham Lincoln.
This is obviously directed at teachers and is an attempt to prepare Americans for the imposition of Islam, since even though the code of Hammurabi pre-dated Islam by many centuries and is actually rejected by Islamic law, the preponderance of references to the Middle East (with one modest mention of Judaism, which influenced our culture much more than did the Code of Hammurabi) and total neglect of Greece and Rome is clearly meant to blank out the West entirely.
When I was in school, we discussed the Egyptians and others around 4th or 5th grade, but in the context of what we already knew (which was the US and Greco-Roman culture, with the children individually knowing about Judeo-Christian culture through their religious instruction).
Fourth grade (in NYC) was devoted almost entirely to local state history, and I remember really liking it. We went on lots of field trips...
But the “Common Core” has nothing to do with reality and everything to do with indoctrination.
Y'all have much better memories than me. I can't remember a single lesson from all of elementary school now that I am close to 60 (however, that was true when I was close to 20, also). But I can remember details of dirt bike specifications from when I was 10 so it must be selective.