What social groups made up urban civilizations? How could I tell if you were wealthy?

Modern urban society was constituted by social groups called economic classes. These are called rich, middle class and poor.

You may notice that someone is rich if that person has high-value purchasing goods and if he has an economic quality that is able to pay for products and services beyond what is necessary for survival.

Explanation:

Modern urban civilization is made up of the social classes known as the rich, the middle class and the poor. All of these classes are important for maintaining the socioeconomic factors of today's society. However, there is a lot of inequality between them, which can cause social discomfort for the lower classes.

The wealthy class is made up of people with high purchasing power, these people own properties and can consume products and services of high economic value, without this interfering with the purchase of the elements necessary for survival.

The middle class is made up of people with reasonable purchasing power. These people are able to consume the products necessary for survival efficiently, even if they are unable to own luxury products with high economic value.

The poor class is made up of people in delicate situations of purchasing power. These people suffer greatly from the social and economic inequality that the class system imposes and do not have enough economic power to pay for the goods and services necessary for their survival.

b) race riots in several cities

that would be the steamboat because none of the other things are forms of transportation