0 the place where two rivers flow together and become one larger river -- confluencia
1 a flowing together of two rivers -- confluencia
the confluence of the Sava into the Danube at Belgrade.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Podemos completarlo paso a paso, por muy largo que sea el camino, y no se puede completar, por corto que sea el camino, si ni siquiera marcas tu huella.
