Which of these scientific and technological advances occurred mainly in the twenty-first century? Select two correct answers.
A. the Internet
B. smartphones
C. Mars Rover
D. social media
E. automobiles

Name three new weapons that changed how ww! was fought and how?

Which of the following describes the branches of government in china? a executive b state council c judicial d premier e legislative f npc g ministers of state

Which of the following accurately describes the workforces of the united states and canada? a. most of the workforce in the united states and canada is employed in the service industry. b. most of the workforce in the united states and canada is employed in the educational field. c. most of the workforce in the united states and canada is employed in manufacturing and mining. d. most of the workforce in the united states and canada is employed in agriculture.