His was the name for the soviet union's program of unmanned space objects that were launched in the 1950s. this satellite's launch in 1957 alarmed the us into speeding up plans for its space program.

George herbert mead argued that the self develops through interactions with others. do you think that your personality or self developed through your interactions with others (parents, friends, teachers) or was it something that you were born with? give an example from your life to support your view.

The most effective way to provide children with safety messages is to

Which us president proposed a decimal based measurement system for the us