Early in wwi, airplanes were mostly used for

In world war one most airplanes were used as fighter airplanes. With  machine guns in them to be used against the enemy

there are two main types of historical sources: primary sources and secondary sources. a primary source is something that originates from the past. it can be a chronicle, a piece of pottery, or even a piece of glacial ice that gives us climate data about the levels of atmospheric carbon one thousand years ago.

hello there the answer is a

sorry if i am wrong hope that : )