The ability of one side of a war to wear down the other side through the loss of
soldiers and respurces is called

Attrition

Explanation:

A friction strategy is the coordinated maintenance of the combat point, where the objective is to exhaust the enemy's physical potential through bombings, insertions and other forms of attack in a short period of time for several days or months, not allowing the enemy to regroup. , refueling, troop rest and other military actions. The aim of this mode of combat is to drive the enemy army into collapse through continual loss of material and personnel.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s