Where two tectonic plates move past one another, rock near the plate boundary can stretch or compress elastically for decades, and then fracture suddenly and create an earthquake?

The large connected urbane area from boston to washington, d.c. is often referred to as

The rocky mountain system stretching from canada to new mexico is a string of mountains running along the wester united states. what factors would mostly cause this arrangement of mountains? intense pressure undemeath a tectonie plate that could not breakthrough the rock subduction of a tectonic plate, which pushed up a neighboring plate into mountains two plates located at a diverging boundary with a third plate rising between them two plates that melted into molten rock, which later cooled into the shape of mountains

What was the first official pair of sister cities?