What theme is expressed in both these excerpts?

Why are primary sources important when studying historical events

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 the new technology can replace outdated, less efficient, machinery.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.

Which of the choices below best describes columbus initial interaction with taino people