The american one stayed mainly between the U.S. and Great Britian, until the French joined. The french one was happening between the lower class french and the french government then i evoled like a pokemon into the french fighting athor monarchies in europe like austria and purssia. i really hope this helps you.
The correct answer is letter A.
Marital alliances were common ways of geographically spreading influences of the dynasty. This was a common practice done by people of the royal blood, where they make allies with other dynasties by offering their daughter's hand in marriage. In some parts of history, this practice has kept the peace in dynasties all over the world.
I am confused about the question that you are asking but if you mean choosing between the choices that you have listed then i believe the answer is 3