What business practice contributed most to Andrew Carnegie’s ability to form a monopoly? using profits to support charities in order to greatly improving his reputation
increasing his profits every year
focusing on a single aspect of steel production
combining his companies into one company, and controlling all aspects of steel production

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the answer is c, all the other options are things they are known for.

hope this ☺️

the answer is a new goverment.

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.