The Republic of Venice, The Republic of Florence, and The Duchy of Milan.
Arid and semi-arid regions often have to go through long periods of drought.A drought is basically a situation in which an area of land gets insufficient rainfall, causing a lot of suffering to those who inhabit these regions. Some of these drought-prone areas include deserts of Australia, parts of India and Sudan among others.
He asked the Roman Catholic Church for help
This was possible for him because he was the holy roman emperor, and when he managed to beat the nobles, he also managed to increase his power through his control of the clergy, so he became the most important person in the country on numerous basis, both as a religious leader and as an emperor of the lands.
Laws controlling monopolies,
The Clayton Antitrust Act,
The Federal Trade Commission.