Frederick the Great marries Maria Theresa of Austria

So how old are they when they marry.

So Frederick will be 28 and Maria will be 22, is that not a bit to old and i notice that Maria by 1740 has been married for 4 years with Francis Stephen.

So the ASB has made sure they do not marry until 1740.

If we go by here Wikipedia account which says:

Maria Theresa understood the importance of her public persona and was able to simultaneously evoke both esteem and affection in her subjects; a notable example was how she projected dignity and simplicity to awe the people in Pressburg before she was crowned as Queen of Hungary. Her 40-year reign was considered to be very successful when compared to other Habsburg rulers. Her reforms had transformed the empire into a modern state with a significant international standing. She centralised and modernised its institutions, and her reign was considered as the beginning of the era of "enlightened absolutism" in Austria, with a brand new approach toward governing: the measures undertaken by rulers became more modern and rational, and thoughts were given to the welfare of the state and the people. Many of her policies were not in line with the ideals of the Enlightenment (such as her support of torture), and she was still very much influenced by Catholicism from the previous era. Vocelka even stated that "taken as a whole the reforms of Maria Theresa appear more absolutist and centralist than enlightened, even if one must admit that the influence of enlightened ideas is visible to a certain degree."

I say that she did good, but that is me speaking.

Well there is no War of the Austrian Succession as Prussia is now allied to Habsburg Monarchy, instead a war between the Prussian-Habsburg Empire and France is still a possibility as France might feel threaten by this new power block.

Looking at this map i made, the Prussian-Habsburg Empire (in yellow) will most likely try to get East Prussia to connect with West Prussia, so yes the Polish–Lithuanian Commonwealth might have a problem on their hands.