Answer:
When highlighting the commercial importance of a city we need to talk about how the city has created a commercial impact.
Rio de Janeiro is a megacity in Brazil and considered one of the most populous.
The following are some of the commercial importance of Rio de Janeiro:
1. Employment: with the economy growing and more sectors expanding, the city has generated several employment opportunities.
2. Tourism
3. Source of revenue generation for businesses.
4. Some Universities are situated there, therefore instrumental in conducting academic research.
5. It supports different occupations such as farming, teaching, and so many others.
6. It increases the country's GDP.