Ever wonder why some people say that they are “Roman Catholic” as opposed to just “Catholic”? For some, this added word is just a formal addition that adds nothing to their identity of Church. And that’s actually true… for most Catholics. But not all.
Much to the surprise, I would imagine, of the everyday Catholic, there are actually separate “particular churches” within the umbrella of the Catholic Church, churches with a different history, liturgy, system of governance, and even rules. In other words, there are people who today are called “Catholic” who are not Roman, have no history of Latin at mass, allow married priests as the norm, and worship in places that look nothing like any Catholic Church we’ve ever seen who are just as much Catholic as the pope.
Confused? Interested? Well get ready for a technical and factually rich episode of Catholicism In Focus that will try to make sense of it all!
Breaking In The Habit 
How do you find the time to do all the research and preparation?! And you’re studying, too! Thank you so much for your efforts to help educate us “in the pews” or at least those that should be “in the pews”.
Your oratory and statements make you a wonder. Your youth gives an contemporary presention on many facts that most Catholics are unaware of, BGod Bless and keep you!
The Eritrean Catholic Church did not just come into communion in 2015. Before 2015, Eastern Catholics in Eritrea were part of the Ethiopian Catholic Church. Eritrea was originally a region of Ethiopia, later came under Italian and then British Imperial rule, was annexed back to Ethiopia in 1958, but was largely in rebellion against Ethiopian rule from 1961 until 1994 when it became independent. In 1994 the Ethiopian Orthodox Church in Eritrea was reorganized into the self-governing Eritrean Orthodox Church and given its own Patriarch. In 2015 Pope Francis reorganized the Ethiopian Catholic Church in Eritrea into the Eritrean Catholic Church with its new Metropolitan Archbishop seated in Asmara, Eritrea rather than being under the Metropolitan See of Addis Ababa, Ethiopia. The Pope did this in order that the Eastern Catholics in the region should mirror the organization of their Orthodox counterparts presumably for Ecumenical reasons.
Thank you for your summary. There is one more rite worth mentioning, now used only in one parish (Kostomłoty) in Poland: Byzantine-Slavic rite. Here you can read more about it: http://unici.pl/content/view/66.html God bless you!