What kept the Portuguese from paying much attention to Brazil for more than 30 years after there arrived in the region

The main focus of the Portuguese was on their colonies and trade in Asia. Therefore, they didn't put much attention on Brazil.

most people were factory or company owners.

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.