The Nubians of Kerma grew wealthy from farming and mining gold. (true or false)

That statement is true.

Explanation:

The Nubians of Karma develop their civilization in Sudan. This region possess a lot of highly nutritious soil and  was located close to the Nile river. This make it easy for the people to seek water sources that is important for agricultural field.

On top of that, they also possess high quality of Gold mines. The Nubians managed to established a strong trades relationships with Egyptian traders sell their gold. This  brought in a lot of wealth for the Nubians.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.