2 adverbs to describe how to subsequent

But, as the Portuguese long continued to frequent these coasts exclusively, and considered them all as belonging to their dominions under the papal grant, this latter cross, on which the inscription was not legible, may have been erected at a considerably subsequent period.

We have seen that the dramatist has no rational course open to him but to assume complete ignorance in his audience; but we have also seen that, as a matter of fact, only one audience will be entirely in this condition, and that, the more successful the play is, the more widely will subsequent audiences tend to depart from it.

2 adverbs to describe how to  subsequent  - Adverbs for  subsequent