The evacuation of the American troops from Vietnam and practically losing the war with this Southeast Asian country had only bad effects on the United States:
- It should the world that they are not unbeatable, and that they actually lost a war with a significantly weaker opponent.
- They were a laughing stock for most of the world because of the lost war and it affected their military reputation badly.
- Inside the Untied states people were extremely angry at the loss of the war, especially because big portion of them considered it as unnecessary and without any point even before it starts.
The Battle of Marathon in 490 BC was part of the First Persian War. This was an attempt to punish Athens and Eretria.
Well this is a very opinionated question but personally:
Astronauts improve society by using the newest and most expensive technology to be able to explore space as we know it.
The oil crisis made it hard for many people to get oil. Lots of people didn't have transportation. Gas stations were either limited or completely out of fuel.
