How a CPU is made from GF Feb $2013.$ This video was made before their F$8$ near Albany NY was built and finished.

It shows the $2-$month process of making CPU$$s$.$

Please explain how each layer of the copper interconnects is deposited and the subsequent step to get the layer ready for the next layer of the copper interconnects. Hints: all these BEOL processes involve water.

Please explain the flip chip bonding for chip packaging.