The shockwave from an undersea earthquake causes 'ripples' in the ocean which are very large swells. When the bottom of the swell touches land, it must build up higher to maintain it's size. Therefore when it approaches the beach, water is drawn away from the beach to compensate for the ocean depth getting shallower under the tsunami swell. More water is drawn from in front of the swell than behind due to the movement of the swell.
In Europe, countries like Britain, Germany and France had abundant natural resources such as coal, iron and water which are key to industry.
For example Britain, where the industrial revolution began, had a lot of resources including water ways, waterpower, coal and iron ore. They used rivers for inland transportation. The first power source they had was waterpower, but as they started to use the steam engine, they used coal instead.
Britain also made machines, tools and building with iron ore.
