What was an important argument of the philosopher herbert spencer?

What event started the space race and made americans feel their security was threatened a.) alan shepard's suborbital flight. b.) the launch of sputnik c.) the launch of explorer d.) the cuban missle crisis

Which of these constitutional amendments made all people born or naturalized in the united states into citizens of the united states ?

Which is the best description of a political campaign tactic during the ele tion of 1828