This is in not a political question/tesing google's religious beliefs
answer. This is just something I've always wondered.

How do people who have never heard of the bible or Christianity, (for
instance remote tribes in New Guinea, or people who lived before Jesus
Christ) supposed to get into heaven? If different sects of
Christianity have different views on this, than just give me whatever
the Roman Cathoulic Church believes.

This article might be of use. It begins:

   "If Jesus is true, and Jesus said that no one comes to the Father
except through Him (Jn 14:6), then what does the Bible say about the
devout Muslim, Hindu, Buddhist, and Jew? What about those who died
before Jesus was born? What about all the babies who died? Does an
answer seem to make evangelism unimportant, make God look ugly and
unfair, or do we "punt" and say we do not know what the Bible says on
this? This tract attempts to give a brief, yet balanced answer."

http://www.biblequery.org/Doctrine/NeverHeardTheGospel/WhatIfTheyNeverHeardOfJesus.htm

   Have a good day.

An old girlfriend of mine, a devout catholic, if memory serves, told
me the Limbo story and said "If you pray for a soul in Limbo, a soul
is freed to Heaven." I liked this and postulated it as a take on
"every time a bell rings and angel gets its wings."

But then I got to wondering-- what order is this done in? FIFO? What
if you pray for a specific soul, say, enlightened
twenty-seventh-century BC architect/physician Imhotep; does he get to
cut to the front? What if he was already prayed for, does your prayer
get wasted or passed on to a similarly-deserving personage? I'd have a
bit of a problem with re-assignation of my Limbo prayers in such a
case and would demand written notice of unavailability along with a
polite explanation of the reason for the reassignment.

And so we come to the crux of the matter-- details of most religious
beliefs just don't make sense when examined carefully. The best advice
I've ever heard is "Try and be nice to people, avoid eating fat, read
a good book every now and then, get some walking in, and try and live
together in peace and harmony with people of all creeds and nations."

(Thanks to Monty Python for the life guidance)

Normally I do not research religious questions. However, this page may
be of interest and a fellow researcher can include it as part of their
answer.
http://www.religioustolerance.org/rcc_salv.htm
answerfinder-ga

Sorry, it formatted wrongly.
http://www.religioustolerance.org/rcc_salv.htm

Hi Top19,
Your question presupposes that the Christian  - or maybe Roman
Catholic -   concept of a Hereafter is the only valid one, and that
its attitude towards where the souls of non-Christians go is valid. 
There is also the implication that the latter thus deprived.
  (This is my interpretation of your question, not criticism of any kind.)

Non-Christians and pre-Christian societies, however, have/had their
own concepts, which satisfy/satisfied their expectations, so I think
we needn't worry about them.
Recently, we all have heard right or wrong information about Muslims's
concepts of a hereafter.  Around the world, archaelogists have
discovered tombs that show that the many ancient societies assumed
that people would need personal belongings, food and drink in their
next life.

My interpretation of John 14.2  - "In My Father's house are many
mansions" -  assumes that the One Supreme Being, Creator of all
things, also has "mansions" for those who lived and died too early to
have been Christians, and for those who have chosen to worship God in
their own way.
I expect that Christian theologians don't agree with me, but I don't ask them to.
Maybe this site is of interest:
http://www.livingstonemusic.net/godmen.htm

Regards, Myoarin

Try reading <u>The Odyssey</u>.  You can get an idea of the Greek
model of the after-life.