This is called trench warfare!
The name comes from the trenches, that is the ditches that the soldiers built.
This warfare was typical in the First World War and it led to frequent stalemates: the trenches are easy to defend but hard to attack so for long periods of times the front remained stable.
The joined the confederates for the confederate states of america the south to succeed from the union.
The answer is C i believe... if not then for sure B
idk if this is what your looking for but i'll try
some of the first things introduced to the Bantu region were:
- yams
- oil-bearing palms
- domestic goats.
hope I helped:)