The assassination of archduke franz ferdinand was the primary cause for world war 1. of what nation was he the heir to the throne?

In japan, the had nearly total power, but he was also assisted by

Me i really need which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

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