Compare the events of all three of the Battles of Sabine Pass with the events of the Battle of Palmito Ranch during the Civil War.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

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a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.