Harriet Ross Tubman was an illiterate slave born in the Bucktown district of Dorchester County on the Eastern Shore of Maryland. She escaped to freedom, alone, in 1849. For the next 11 years she returned to the South 19 times to lead more than 300 slaves north across the Mason-Dixon Line and sometimes into Canada.
HOW DO EARTHQUAKES AFFECT SOCIETY? The earthquake hazard poses the most serious intermediate term risk to the health, safety, and economic viability of many parts of the United States and throughout the world. Recent earthquakes demonstrated the risks to modern industrial societies from such cataclysmic events, affecting everything from massive loss of life, infrastructure damage, and financial instability. Much larger earthquakes can be expected to occur adjacent to many metropolitan regions in the United States. Examples: 1. The Northridge earthquake (1994) was a modest (magnitude 6.7) event which caused 57 deaths, over $20 billion of damage, and created major disruption of the Los Angeles area infrastructure.
This causes earthquakes such as the Koyna earthquake in Maharashtra. The shock waves through rocks set up by the underground testing of Atom bombs or Hydrogen bombs may be severe to cause earthquake. Effects of Earthquake Destructive Effects: Earthquake causes dismantling of buildings, bridge and other structures at or near epicenter. Many men and animals are killed or buried under collapsed houses. Rails are folded, underground wires broken. Fire breaks out inevitably in large towns. Earthquakes originate sea waves called Tsunamis. Earthquakes result in the formation of cracks and fissures on the ground formation. The earthquakes cause landslides and disturb the isostatic equilibrium. Landslide due to earthquake may block valleys to form lakes. Constructive Effects: Sometimes the earthquakes cause formation of hot springs which are very useful to people.