They were hindered by economic development and lack of enforcement, so I'd say 1. Cost, because no one would pay for it.
Answer:
Primary sources, because they can be more accurate about a certain incident or event.
Explanation:
Means to dichange something .
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).
