What technology let an american sailor know the japanese planes were coming

Look at this photograph taken during the battle of guadalcanal

Why might congress have had difficulty paying the war debt after the american revolution

Which purposes of the constitution are found in the preamble? select the six correct answers. to provide for the common defense to form a more perfect union to promote the general welfare to secure the blessings of liberty to declare independence from britain to establish justice to ensure domestic tranquility