How to connect an external display to a MacBook Pro Late 2016? I would like to connect an display (Dell LCD monitor P2715Q) to a MacBook Pro Late 2016.

When connecting via USB and Mini DisplayPort, the display still says that there is no signal from the computer. I can't insert the CD that came with monitor since this model of MacBook doesn't have an optical drive.

Is it driver issue (and where could I download them) or is it compatability issue?
As I suspected, there is no such thing as a mDP to USB-C converter from Apple. You are using the Thunderbolt 2 to Thunderbolt 3 adapter. It does not convert DisplayPort signals, only Thunderbolt.