Jamie sighed, and shifted, thinking on her words for some time before she spoke, "I will not force any one of my members to do something when they are not yet ready. As I believe Sasha would like all the guild Master's here, and Jack is not yet here, I would rather leave it to her, but... 

No one can say for sure what happened 100 years ago... I know many think that Zeref perished, with the missing guild members from Fairy Tail, Blue Peagus, Sabertooth and Lamia scale... And the dragon Archnolia. The island... well, it can never be found unless you are Fairy tail, carrying their blood. Oh, many mages have tried over the years, thinking that it might be a safe place from mage hunters- we all know they were a thing, and quickly adapted to rune knights when we started to come back, and build guilds again.

We can speculate that, given the nature of Dragon slayers, or many other slayers for that matter, the extent of the magic the slayers used, they changed, became the dragons they were guided to be, but... I don't think that is it. I think... they used their last strengths to try and overwhelm Zeref and his dragon, and something happened... trapping them all within the island. Perhaps the island itself sought to protect the world, although it was already too late then, the damage was done, and its taken 100 years to even get close to the former glory of magic. 

Only, I think the islands power weakens, and that is the reason for the increase in natural disasters" She said, looking to Sanders, "Does that satisfy you, for now?"