WORLD HISTORY

Detailed explanation-1: -The 3rd century was the period from AD 201 (CCI) to AD 300 (CCC) in accordance with the Julian calendar.

Detailed explanation-2: -CE stands for “Common Era.” It refers to the same years as AD does, just in a more secular way. The year 2022 CE is the same year as 2022 AD. The Gregorian calendar, which is the dating system we use to measure years today, was created by a pope of the Catholic Church.

Detailed explanation-3: -AD 1 or 1 CE is the epoch year for the Anno Domini (AD) Christian calendar era, and the 1st year of the 1st century and 1st millennium of the Christian and Common Era (CE).

Detailed explanation-4: -CE is an abbreviation for Common Era. It means the same as AD (Anno Domini) and represents the time from year 1 and onward. BCE is short for Before Common Era. It can be used instead of BC (Before Christ) and stands for the time before year 1.

Detailed explanation-5: -Thus, the current year is written as 2023 in both notations (or, if further clarity is needed, as 2023 CE, or as AD 2023), and the year that Socrates died is represented as 399 BCE (the same year that is represented by 399 BC in the BC/AD notation).