This is misleading when you dig into the data. For starters every state and nation does not record deaths and causes of death consistently, so there's a lot of apples and oranges comparisons going on. Second, in the US depending on the state, any death within 90 days of giving birth is labeled as a pregnancy-related death. The person could be hit by a car, or die of a drug-overdose, and it would be still be identified as a pregnancy related death.