The correct answer is A) cataracts.
Nubians did not use the Nile for trade because of the cataracts.
The Nile River in North Africa is a navigable river in some parts of the Nile. However, on the part that crosses Nubia, there was a cataract that impeded navigation for the Nubians. Today, that cataract is part of the Nasser Lake. In that region of Nubia and Egypt, there is another cataract that is located in Aswan, Egypt.
Probably, you do not know that the Nile River has six cataracts along the river. One is Egypt (Aswan) and the other five are in Sudan (today, Nubia is part of Sudan).
Answer:
The Supreme Court and other federal courts (judicial branch) can declare laws or presidential actions unconstitutional, in a process known as judicial review. By passing amendments to the Constitution, Congress can effectively check the decisions of the Supreme Court.
<span>Until it was abolished in 1861, serfs -as they were known- in Russia were ... and the year 1861, when under the rule of czar Alexander II serfdom was abolished. ... of serfdom, but on compiling information about the lives of peasant <span>serfs before.</span></span>
<span>Plants use capillarity to move water from their roots to their leaves. Animals rely on capillarity to maintain their body temperatures. What role do aquifers play in the water cycle? They are the main source of water on Earth.</span>
