So I know there are many uses of か, but the one I want to focus on is using a question word with か. For example:
For these two sentences, the か inbetween the two words acts as a connector and replaces the particle. However, I was wondering what to do if this か is at the end of a sentence. For reference, I am trying to write the following:
The contents of the reading are about how baseball entered Japan.
What I am unsure of is how to end this sentence is both plain and polite ways, i.e.
or something else.