Archimedes made practical inventions which enabled the Syracusans to fend off the Roman siege. He protected the city by his inventions, for example, he invented a huge crane operated hook " the claw of Archimedes" that could be able to lift enemy ships out of the sea. Legends tell that he also invented a way to make Roman ships to catch fire by reflection and focusing of light of the sun on their ships by use of a large mirror. A combination of this and onages and ballstats on the city walls made it difficult for Romans that forced them to apply direct assault which was expensive or the Romans.
How did the dust bowl impact populations demographics in the United States
he Dust Bowl was the name given to the drought-stricken Southern Plains region of the United States, which suffered severe dust storms during a dry period in the 1930s. As high winds and choking dust swept the region from Texas to Nebraska, people and livestock were killed and crops failed across the entire region. The Dust Bowl intensified the crushing economic impacts of the Great Depression and drove many farming families on a
The primary causes were that Sparta feared of the growing power and influence of the Athenian Empire. The Peloponnesian war began after the Persian Wars ended in 449 BCE. The two powers struggled to agree on their respective spheres of influence absent Persia's influence.
