Pesah - Haggada
Maggid - Baruch Ha'Makom
The father begins his answer to the children by talking about how we were slaves in Egypt. Then, after some discussion on slavery in Egypt, we suddenly announce "ברוך המקום ברוך הוא. ברוך שנתן תורה לעמו ישראל" - Blessed is the Ever-Present, blessed is He.Blessed is He who gave the Torah to His nation Israel...
This night is not about celebrating the giving of the Torah. That is what we do on Shavuot. Why do we suddenly break out in song praising the giving of the Torah? We are in the middle of relating about the exodus from Egypt! We should maybe at this point be blessing Hashem for taking us out of Egypt??
The prupose of the exodus from Egypt was to become a nation under Hashem with the Torah. Without the Torah, none of the exodus would have happened. So now we are discussing the exodus, it is appropriate to bless Hashem for the Torah, because the Torah was the whole point of the events.