What kinda of relationships existed between the different types of people involved in the production of goods

Some social relations are voluntary and freely chosen (a person chooses to associate with another person or a group). But other social relations are involuntary, i.e. people can be socially related, whether they like that or not, because they are part of a family, a group, an organization, a community, a nation etc.

Explanation:

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.