You mean "The Tree of Liberty must be refreshed with the blood of Patriots and Tyrants". It means a revolution should take place once government gets too big or they begin to infringe on the free will's of people. Which means, Patriots and Tyrants will die if it means to maintain Liberty.
I believe that Congress could declare war, (though states could, ahem, not draft soldiers), could sign treaties and trade agreements
yea, i think that's it, since there are much more weaknesses to the Articles of Confederation than strengths....
Fredrick Douglas is the answer
hope it helped!