What helped resolve the issue of sanitation in overcrowded cities in Rome?

roads
aqueducts
public baths
sewer systems

What was the first most significant result of the peninsular war

How did the treaty of versailles cripple germany after world war one ?

30 in 1566 the i belonged to spain. ii rebelled against spanish rule. iii was in independent country. iv was made up of both catholic and protestant provinces.