Which of the following are ways in which all states maintain road safety? Select all that apply. A) conducting emissions tests
B) employing highway patrols
C) licensing drivers
D) setting up tolls
E) setting speed limits

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the constitution gives congress the power to regulate commerce "among" the several states.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.