If Europe and the east with all of their technical advancements didnt exist, what would native american culture look like today? How long before they advanced to get electricity, modern medicine, plumbing, steal work etc?

Actually several south American peoples were highly advanced, it is just disease wiped them out in the millions leaving them vulnerable.

Also the indigenous peoples of north America had all they needed really. No reason to advanced if life is comfortable and you are living above survival.