Everything, almost. Cars, phones, computers, spices, water on demand, electricity, the quantity and quality of almost everything, etc.

If the average person from, say, mid 1600's were teleported to now, they would be so unimaginably confused, and hostile towards everything, and that makes sense, since so much has changed.

The internet would be something beyond comprehension for them, yet it's something most of us use multiple times a day.

Have a great day, be kind, and I hope this answers the question! :D