That could well be a religions/cultural difference. I would not be surprised if mostly-white parts of the US with poor sex education have higher rates of unplanned births (than Europe), rather than abortions.
I am sure it is a cultural difference - but not wrt abortion but marriage.
"In 2011 , 72 percent of all births to black women, 66 percent to American Indian or Alaskan native women, and 53 percent to Hispanic women occurred outside of marriage, compared with 29 percent for white women, and 17 percent for Asian or Pacific Islander women."
