You have totally misrepresented my views and have totally botched what the time line represented. It had nothing to do with what you allege. The list on page 7 of "Investigating Mathematics" only described events to be placed on a time line which portrayed our system of government, and, particularly economics in a bad light.
I can imagine the justifiable outrage from the Left if the Christian Coalition devised a similar time line for ninth graders to construct with their historical POV emphasized. How would "197?-Year Supreme Court decides Roe v.Wade opening up wholesale abortions". Get the idea?
This has nothing to do with any kind of conspiracy by anyone. But it has everything to do with the mind set of the educational establishment which is decidedly liberal, ooops, excusez moi, progressive!!! The NCTM is an excellent example of this in that every publication they put out is brim full of statements about "equity" and "diversity", two mantras of the educational Left. If this isn't apparent to you, I'd suggest you get away from the U of M.