How were the egyptians able to predict when the nile would flood each year

They watched the stars, when the star Sirius appears, they knew the flood was coming.

Hope this helps.

concurrent jurisdiction is the ability to exercise judicial review by different courts at the same time, within the same territory, and over the same subject matter. for instance, a domestic violence matter may be heard in either a general civil court or a family court in the same county. whichever court actually exercises its jurisdiction first will do so exclusively.