It affects public opinion negatively because it people tend to believe what they hear.
The expressed powers are powers which are explicitly mentioned (typically in the constitution) and the implied powers are generally the powers that are needed to fulfill the obligations or to use the expressed powers, but which are not explicitly mentioned anywhere. Therefore the correct answer is:
b. implied powers are generally agreed upon and express powers are written in the Constitution
1. Coastal position allowed Genoa and Venice to be not only hubs for inland trade, but also naval trade.
Naval trade allowed transportation of goods from far away, as it was faster and more safe.
2. People of Italian trade cities probably borrowed some words, clothes, cuisine and inventions from those who visited them.
3. Signoria was a type of government, were power was held by one dynasty, or party. Signorias were often established in times of crisis, when it was important to have a strong figure, who could make swift decisions to stave off the threat.
4. Signoria helped to create strong civil government, relatively independent from pope or monarchs. Because of it italian cities could be more open minded towards science and secular culture.
5. It's a situation which is very prone to corruption, especially nepotism. The ruling family would try to perserve status quo, and would offer most important offices to familiy's members. The quality of people in power would deteriorate, as they are appointed not by merits and skills, but by blood.
It would also be important to be in good relations with the ruling family, so it would probably be necessary to give them bribes or gifts.
You have much higher chances to receive an answer when you divide this question into 2,3 or even 5 shorter questions :)
