Witch dating system makes it easier to mark and compare historical events

BCE/CE and BC/AD

I hope this helps! If you need more specifications please ask.

BCE/CE

Explanation:

It meant Before the Common Era and Common Era. It is a dating system similar to BC/AD but without the religious content that this has. BC stands for Before Christ and uses the date of Christ´s birth as year 0 and AD means Anno Domini, Latin for the year of our Lord.

It would be preferable to use the term I picked because it had no religious content and it includes all those people who do not believe in Christ.

I hope this answer helps you.

d) post-world war i