How did conflict or cooperation within early civilizations relate to the use of resources

What was a major cause of world war i?

Between 1870 and 1916, approximately how many immigrants came to the united states? 10 million 25 million 75 million 125 million

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.