Which of the following is the biggest obstacle to traveling by boat on the congo river

A. The many cataracts

Explanation:

There are many cataracts also known as waterfalls in the congo river witch makes it hard to travel there on a boat. I also took the test and I know for sure that C is inncorrect.

the best description of the camp david accords is that it was the first time an arab nation had officially recognized the nation of israel.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity