atheists religion agnostics nones pew findings
religious most groups attainment pew educated educational least united states degree among religion education school pewresearch research share affiliation college
science religion pew research center
pew churches republican leanings democratic denominations denomination democrats protestant leaning percent identify polls nazarene pewresearch preference
religious religion religions world global distribution pew geographic christianity landscape christian groups africa chart america north charts growth largest center
religious christians largest group world declining remain europe they but pew