Trenches were built during world war i for what reason? a. to reroute water away from the battlefields b. to protect soldiers from gas attacks c. to gain access to needed metal in the ground d. to protect soldiers from machine gun fire

The united states' entry into world war ii had which of these effects on domestic politics? pro-union legislation was repealed. support for banking reform intensified. concerns about the economy were largely abandoned. attempts to promote civil rights became far more successful.