Was post-war conflict between the united states and soviet union unavoidable?

Honestly, it's a matter of opinion. Some could argue that yes, it could've been avoided because the USSR and the US were allies in war, and the USSR could've helped the US if it wasn't for Stalin. Or you could argue no. You could say that the communist system of the USSR just went against the US views of economy, and that sparked tension.

the use of email to replace slower surface mail.

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).