"I do think stocks over all have become expensive on a historical basis."

I've been interested in the historical basis of the Muslim religion.

However, there appears to be no historical basis to this story.

The historical basis was all the reason Shakespeare needed to include the character in his plays.

However, these theories are without historical basis and do not stand up to scrutiny.

However, all these names are made up and have no historical basis.

Some of the events and names in the poem have a historical basis.

God forbid that I should rest this paper on a historical basis!

Neither of these events have any historical basis, for the two never met except in combat.

The next two takings would also seem to have a historical basis.