Answer:
introducing zero as a placeholder
Explanation:
The Maya were one of the earliest ancient nations to employ the concept of zero, allowing them to write and compute vast sums.
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Answer: Joe Costello
Explanation:
Just eighteen years old in the fall of 1967, he was a grenadier for the Alpha platoon of the Black Lions.
Predatory pricing and colluding with railroads to eliminate his competitors, in order to gain a monopoly<span> in the industry.
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Answer:
Socialists pushed for general social equality while Labor unions focused on workers' rights
Explanation:
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It’s the last one I’m sure of it
