Are the following events independent or dependent?

[jgaleach]

I asked the following question in an exam. I can argue both ways, but I am very interested in any further thoughts.

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Are the following events independent or dependent? Please give details of your
choice. No marks will be given for answers without a reason.

Event A – Parents having a girl as their first child
Event B – Parents having a girl as their second child

 

[hlsmith]

From what I know, I think statistically speaking the third child's gender can be conditional given certain scenarios based on the gender of the first two siblings. I don't believe only a prior singleton pregnancy is considered predictive at this time. But I could be wrong.

 

[Outlier]

For Event A, FWIW, no, since I've heard that the rate of boys born in countries that are at war is higher than normal.
B, not independent if you accept above premise.