define the term-Louisiana purchase

The Louisiana Purchase was when the United States of America bought the land of Louisiana from Napoleon in 1803 for $15 million.

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 correct answer is a