the priests.
Ogham
The early cultures developed mainly from the day to day activities that people were engaged in. Such activities became norms and were the basis of early cultures.
It was quicker and easier to transport goods by water.
Millions of immigrants came from other countries, mainly from Europe and settled in America's cities, mainly in the urban centers.
The Xiong Nu mainly, and the Xian Bei during the Eastern Han Dynasty.
Sumeria
Gilgamesh
No. Altars existed as early as Sumeria (4000-5000 years before Greece).
Technically, Jesus is responsbile for the origin of Christianity, seeing as the religion is based around him. However, the tradition of Christianity was not set by Jesus; it developed over time, but was begun mainly by early Jewish Christian believers, especially the twelve apostles, who functioned as early leaders. Saint Paul (and later, more extremely, Marcion) are largely responsible for separating Christianity from Judaism.
Reference get quite thin and suspect in the early bronze-age but accounts are to be had from Sumeria and Babylon. The first one with a name is Alen-buk.
It was mainly used for research...I think
They were mainly policemen
Charity
Ogham
Grey and brown, mainly.
Mainly heat, cooking later
Palestine, Rome, Greece, & Armenia. It was mainly practiced with the celebration of the Eucharist(the Body & Blood Of Christ).