I think the last group to invade Rome before it fell was Odoacer
This easy look up stuff about the Nile river its quite easy, the Nile is in egyp it helped the egyptian alot with farming becase its rich with minerals
<span>The southern states are not as industrialized as the northern states, so they need a lot of human workers to work in the plantation, and slaves are the cheapest way possible to obtain those human workers
The northern states, on the other hand, embraced developed industry and factories which make slave labor become unnecessary.
</span>
Some problems are warming of ice in the summer, and lack of food for young ones. Hope it helps! :)
The politician who introduced this term and used it widely was Winston Churchill, one of Britain's most famous prime ministers and a Nobel prize winner for his analysis of history.