Why was the entry of the united states considered a turning point in the war?

Which are in millennium development goals check all that apply

European expansion into africa left native regimes intact but had a strong impact on local societies what does this mean

Which statement best describes the response by the united states and its allies to the berlin blockade? planes dropped tons of supplies around the city each day. trucks smuggled tons of supplies into berlin about once a week. tons of supplies were delivered to west berlin by boats. tons of supplies were purchased from east berlin each day.