Simplify the following text for a Grade 6 native English-speaking person.
Original: Bujumbura is the capital and largest city and main port of Burundi and ships most of the country 's chief export , coffee , as well as cotton , skins , and tin ore. .
Simplified: Bujumbura is Burundi 's main port . It transports most of the country 's main export , coffee , as well as cotton , animal skins , and tin ore.