The two obstacles for develop nation are
-climate change is main problem
-Affordability of healcare
Answer: At the time of the exchange, there were contacts with each other, which was disastrous for the natives.
Explanation:
Contacts between Europeans and Native Americans were disastrous for the Indians. Coming to the New World, Europeans brought infectious diseases to which the natives had no immunity. Smallpox, flu, and similar diseases decimated the Indian tribes. A huge number of natives perished, and complete tribes disappeared.
Answer: The December 26, 2004 Indian Ocean tsunami was caused by an earthquake that is thought to have had the energy of 23,000 Hiroshima-type atomic bombs. ... Within hours of the earthquake, killer waves radiating from the epicenter slammed into the coastlines of 11 countries, damaging countries from east Africa to Thailand.
The high of the wave in 2004 tsunami was 100 feet
Explanation: For an earthquake-generated tsunami, the wavelength generally reaches a few hundred kilometres if the concerned fault is long. For the 2004 Sumatra earthquake, the wavelength is estimated, from the first wave measured by the Jason-1 satellite altimeter, as around 500–600 km (Gower 2005).
