Their customs were outdated, the advancements of weaponry and technology by the europeans and americans frightened the japanese of invasion, hence opening its trade ports to adopt these new innovations by the Europeans and the Americans.
Argentina, Belgium, Bolivia, Brazil, British Empire, Chile, Republic of China, Colombia, <span><span /><span><span><span> United Kingdom,</span><span> Australia,</span><span> Canada</span><span>, India,</span><span> New Zealand</span><span>, South Africa</span></span>,
</span><span /><span /><span> Cuba</span><span>, Czechoslovakia, Germany,</span><span> Denmark</span><span>, El Salvador, </span><span>France, </span><span>Greece</span><span>, Guatemala,</span><span>Haiti,</span><span> Honduras,</span><span> Kingdom of Italy, </span><span> Empire of Japan, </span><span> Liberia,</span><span> Netherlands,</span><span> Nicaragua,</span><span> Norway,</span><span> Panama,</span><span> Paraguay, </span><span> Persia,</span><span> Peru,</span><span> Poland,</span><span> Portugal</span><span>, Romania, </span><span> Siam aka Thailand, </span><span> Spain,</span><span> Sweden,</span><span> Switzerland,</span><span> Uruguay</span><span>, Venezuela,</span></span><span><span> Austria,</span><span> Bulgaria, </span><span>Costa Rica, </span><span> Finland, </span><span> Luxembourg,</span><span> Albania, </span></span>
Answer:
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
