Let us take Napoleon Bonaparte for example. His crusade, in part, failed due to the harsh Russian weather that caught his army as he wanted to conquer Russia. So, I would assume Napoleon would have loved one of myriad weather apps that can be found both on Android and Apple phones so wouldn't be caught off guard again.
If Christopher Columbus would have been brought back to life then he would have used the google maps. It would have been more interesting for him and he would have visited more places in lesstime and in a more convenient manner. The intended pun would be that he would not have landed into the place where he had not yet planned to visit. Basically, It would have been of great use for him.
