What was north america like before europeans came ?

The nye committee report created the impression that america's entry into world war i was influenced by

Oque provoca coroço no peito do homen?

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.