Answer:
If their writing dissapears, then, what is known about that civilization is also likely to dissapear, unless their previous writing was preserved in some other way.
This is something that has actually happened often in history. For example, the library of Alexandria, in Egypt, was the largest library of the Ancient World, and it was burned down by Caliph Omar in 642 AD. Countless works by Ancient authors, that gave account of civilizations, cultures, philosphies, and religions, were lost, and there is no plausible way to recover such knowledge in the current era.
There were positive effects as well as negative effects.<span>
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<span>They filled the jobs that had been previously held by men.
i might be wrong but try it</span>
Some possible new ideas could be:
LGBTQ Have the same military rights as everyone else.
New regulations for who can qualify to be in the presidential race.
Or, A whole new layout for the United States.
Hope this helps!