In 7th century A.D modern day Saudi Arabia.
Answer:
A creeping bombardment, first used at the Battle of the Somme, involved artillery fire going forward in phases only ahead of the advancing infantry. ... To work, both the heavy artillery and the infantry required correct timing of the tactic. Failure to do this would result in their own troops being killed by artillery.
Using simple words, imperialism is a policy of certain country involving a will of extending its power by using any kind of pressure or force.
For example - In 1939 Nazi Germany together with Soviet Russia jointly invaded Poland, in the result, both countries extended its borders.
Fix that grammar my brotha
They settled around the tigris river