The main purpose of the us passing the neutrality act in 1939 on a crash and carry basis was to

it should be all of them because it asks if you included all of those in your answer

explanation:

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.