What was the purpose for the masks shown
above during world war 1?
a. to conceal the identities of soldiers
b. to protect soldiers from flying debris
c. to utilize improved night vision
d. to minimize the effects of poison gas

Which would have been a push factor of immigration ?

Do humans change their physical environment to adapt or do humans adapt themselves to their physical environment?

Which statement in the passage best reflects sumer's opinion of the dred scott decision? a."i speak what cannot be denied." b."[the] judgment was sustained by a falsification of history." b."the opinion was more thoroughly abominable than anything history." i speak what cannot be denied when i declare that the opinion of the chief justice in the case of dred scott was more thoroughly abominable than anything of the kind in the history of courts. judicial baseness reached its lowest point on that occasion. you have not forgotten that terrible decision where a most unrighteous judgment was sustained by a falsification of history. -charles sumner, 1865