Describe briefly the purposes of government set out in the preamble to the constitution

to form a perfect union(The Constitution was built in belief that in union there is strength), establish justice (the law must be reasonable, fair and impartial), insure domestic tranquility (Order is essential to the well-being of any society, and keeping peace at home), and provide for the common defense ( defending the nation against foreign enemies one of the govt's major responsibilities and he defense guarantees tje security of the U.S)

More context .