Final answer:
In the section 'three years later', the fact that has the greatest influence on subsequent events is that John White found the settlement abandoned and overgrown when he returned to Roanoke in 1590.
Step-by-step explanation:
The fact that the reader learns in the section 'three years later' that has the greatest influence on subsequent events is that John White found the settlement abandoned and overgrown when he finally returned to Roanoke in 1590. The ship and boats that had been left were gone, and his belongings had been packed in chests that had clearly been there for a long time and had been ransacked. This discovery indicates that the colonists had left under duress and raises questions about their fate.