The Common Era (CE) mark and dating system were introduced around 1992-1993 (first mentioned of it is found in 1987) with the founding of the European Union, although it is often said to mean Common Era it is also a mark the CE Mark or Conformité Européenne, meaning European Conformity needed to buy or sell goods in the European Union. The Treaty of Maastricht (1993 AD) replaced the Treaty of Rome (in effect since 1957 AD). Another suggestion for the origin of the term "Common Era" (CE) is an anti-Christian attempt to conceal that Jesus is the historical basis for the primary calendar dating system. "Common Era" has no real meaning, and even the origin of this term is unclear. A later edition (11th) defines it as the Christian Era. The first recorded use of the phrase "common era" was in 1708. It should be noted that if multilateral trade deals would have continued to be the norm then the CE mark would have been required to sell goods and services globally.
The established calendar dating system, which uses the Anno Domini ('AD') notation, is based on the calculations of Dionysius Exiguus for the birthyear of Jesus relative to the foundation of Rome. At the time, dates used the 'AD' system instituted by pagan and murderer Emperor Diocletian, which used the first year of his reign as year 1. (In that system, "AD" stood for Anno Diocletiani, and should not be confused with the present-day AD system.) Because Dionysius Exiguus in the year 525 wanted to end the memorialization of an evil man who persecuted Christians, he invented a new numbering system based on his calculations of the birth year of Jesus Christ. However, as he miscalculated, the terms BCE/CE are more accurate than BC/AD as the last few years BC were not actually Before Christ, and hence 1 AD is not actually the first year after Jesus' birth.
While the use of the phrase "Common Era" has existed for hundreds of years, only recently have politically correct liberals attempted to replace all instances of 'AD' with 'CE.' The original use of 'CE' was to avoid the common practice of countries basing their dates on when their rulers reached power  or were born, i.e. the "regal era" from the birthdate of Jesus Christ, which belonged to all men "the common era." While use of "Common Era" attempts to erase recognition for the Christian basis of the calendar, there are no similar attempts to erase non-Christian religious names from the calendar, such as the days of the week named after Norse gods. Numerous texts, particularly schoolbooks, have replaced "B.C./A.D." with "Common Era" symbols over the past decade. This is part of a United Nations effort to remove Christ from the Christian calendar and replace other cultures' orthodox calendars with it.