Well, they used to kill each other not so long ago. Look at the 20th century (or any previous one) - they hated each other. They’ve opened lots of borders since then and it was a gradual process with lots of negotiations and conditions. I’m sure you don’t think it’s possible to open a border without proper preparation.
Which drowns refugees seeking asylum in the Mediterranean? That EU?
Well, they used to kill each other not so long ago. Look at the 20th century (or any previous one) - they hated each other. They’ve opened lots of borders since then and it was a gradual process with lots of negotiations and conditions. I’m sure you don’t think it’s possible to open a border without proper preparation.