There are main cataracts, or waterfalls, along the nile river. a. 4 b. 92 c. 2 d. 5

The six cataracts of the Nile River are shallow stretches where boulders break up the water like white water rapids. Counting from north to south, the first is located in Egypt, and the rest are located in Sudan. In geography, a cataract is defined as a large waterfall or rapids.

The cataracts are sections where the river tumbles over rocks and have long kept boats from going up and down the river from Equatorial Africa to Egypt. There are six classical cataracts, but there are really many more.

answer: this is because archeologists keep finding artefacts and ancient ruins dated more than 10000 to 15000 years, date around scientists said humans discovered language; which is at least mysterious as scientists always have said that is necessary to have a language to have architecture and some basic maths.

explanation: brainlest