What does "We the People of the United States, in Order to form a more perfect union" mean?

first paragraph (and busy all the night ,with a silence deep and white )

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.

the answer is definitley b!