D im pretty sure gl hope u get it right
<span>The correct answers are B. A moat filled with water from the Euphrates River surrounded the city, and
C. Walls around the city provided protection from enemies. This was copied later by many cities beacuse it was successful. Cities would dig deep trenches and holes around the city and fill them with water and you wouldn't be able to enter without crossing the bridge that may or may not be lowered for you. </span>
The most likely reason Persia gave economic control to Russia and Britain was because they were torn from a revolution and needed the injection of cash and credit that this transfer would bring.
Muhammad is Arabic and plz explain more on your question