I think i would chose d, although the others aren't bad either :/ i would say d because of their involvement in the war
Answer:
Bad data in Geography causes a loss of accuracy in the size or position of objects on a map.
The air behind the front is cooler than the air it is replacing and the warm air is forced to rise, so it cools. As the cooler air cannot hold as much moisture as warm air, clouds form and rain occurs.
Answer:
I think the types of system in Geography are Human, Biological and Physical. Hope this helps please mark me BRAINLIEST.Thanks