Question

which sentence is more formal? andrew carnegie became one of the worlds richest men after selling his steel company to john pierpont morgan in 1901. andrew carnegie made tons of dough when he sold his steel company to john pierpont morgan in 1901.

Explanation:

Formal language uses standard, precise vocabulary. The first sentence uses "became one of the world's richest men" (formal phrasing), while the second uses "made tons of dough" (slang for making money, informal). So the first sentence is more formal.

Answer:

Andrew Carnegie became one of the world's richest men after selling his steel company to John Pierpont Morgan in 1901.