The main events that marked the end of the Cold War were the fall of the Berlin Wall in 1989 and the breakup of the Soviet Union in 1991. The Berlin Wall had been the main symbol of the Cold War.
Ulysses S. Grant is the answer
Environmental Impact. The Gold Rush had an effect on California's landscape. Rivers were dammed or became clogged with sediment, forests were logged to provide needed timber, and the land was torn up — all in pursuit of gold.
A town often becomes a ghost town because the economic activity that supported it has failed, or due to natural or human-caused disasters such as floods, prolonged droughts, government actions, uncontrolled lawlessness, war, pollution, or nuclear disasters.
