Most religions are creationist.
Think of any religious wedding ceremony.
Usually creationism isn't even mentioned.
It depends what particular religion you adhere to.
For the same reason Jewish marriages are celebrated in a synagogue and Muslim marriages are celebrated in a mosque. Marriage, when celebrated as a sacred rite or ritual, is celebrated within the religion of the celebrants and participants.
They can both be taught in classrooms. However creationism cannot be taught as if it were scientifically verifiable fact in public schools, as it is not science, and the US constitution prohibits federal or state funded (educational) institutions promoting religion. So if creationism is taught in public school, then it must be taught in comparative religion or philosophy classes, and not in biology classes.
Marriage
There are unlikely to be questions about creationism in standardized tests, unless the subject for the tests is religion.For more information about creationism and its relationship to traditional religion and to the teaching of science, please visit: http://christianity.answers.com/theology/the-story-of-creation
The legalization of same-sex marriage is a positive change and does not prevent the free exercise of religion.
No. One cannot marry a person of muslim,christian,jew or parsi religion under Hindu marriage act.But one can do so under special marriage act that is for inter religion marriages.
The Feast of Tabernacles is celebrated by the Jewish religion.
Creationism is faith based, and naturally faith varies from person to person; whether their religion is different or they profess to Atheism. Also, It is not something that is objectively observable, and thus cannot be scientifically verified, and this creates rifts between Faith and the field of Science.
when one personwas part of one religion, he or she spreaded their religion through marriage.
The incorrect religion will not invalidate the marriage. It is more for statistical reasons than regulatory.
The religion itself does not have a specific age.