Answer:
Post-industrial
Explanation:
The US is past the industrial period. Meaning it is past the industrial period which was between 1865-1900. It is currently 2020 so this is true.
The Vietnam was a stalemate that ended in 1975 a few short years after the US withdrew help from south Vietnam. But even though it was a stalemate the country came back together and did not spilt in two like Korea.
Answer:
It can stop it from being killed due to a local "disaster", like a fire, for example.
Explanation:
By planting seeds far from the parent plant, you are increasing the probability the genetics from the plant will survive because they are further from one another. So, for example, let's say there is a forest fire, if they are close to one another, both the parent plant and seeds are likely to perish. If they are separated by space, potentially one of the two won't be in the path of the fire and will survive.