It was bad because peoples' lives were lost during the border wars.
That is why, hope this helps. :)
Answer:
He traveled to the Americas for various reasons, one thing that Columbus did was in a way start the Columbian exchange where things such as food, plants, livestock, and diseases were spread into the Americas that were never there before.
In a working economy, it requires labor to attain natural resources to produce other resources. then once a city is built and currency is established, entrepreneurship is required to buy and sell goods. Lastly, capital is required to keep order in the population
I'd say pollution or disease.
He led his troops north and invaded union territory
