In addition to the above, western countries modernized rapidly through industrial revolution in the latter half of the 18th century, and for their own political and economic reasons, started debouching into various places around the world to acquire their own colonies for the purpose of seeking resources and markets for their own industries, rather than for the simple purpose of 'adventure' during the Age of Geographical Discovery.
それに加えて、18世紀後半の産業革命によって欧米諸国は急速に近代化しており、それぞれの政治経済的事情から大航海時代の単なる「冒険」ではなく、自らの産業のために資源と市場を求めて世界各地に植民地獲得のための進出を始めた。