6. Give the name of a city that sought to become influential in the Mayan Classic Period. Calakmul

Which factor has played the most important role in changing the way history is studied over time?

What new concept did the the american revolution introduce into the world

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