Periods 1-4 Final

According to the introduction to the Constitution, what would this new government do list and explain 2 things) and in whom does the power reside?
We the People of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense,
promote the general welfare, and secure the blessings of liberty for ourselves and our posterity, do ordain and establish this Constitution for the United
States of America"