Fill in the blanks with appropriate words in each gap: Many events of great importance (a) ____ during the last century. Significant advances (b) ____ in the field of science and technology. Many European colonies gained independence. The movement (c) ____ democracy became (d) ____ in many parts of the world. Two World Wars (e) ____ in the century. It (f) ____ witnessed the misuse of atomic energy. Two cities of Japan were completely destroyed as a result of dropping of atom bombs. The Vietnam War and the Gulf War killed many innocent people. However, the (g) ____ of Bangladesh as an independent country (h) ____ a momentous event. After a (i) ____ war of nine months, Bangladesh emerged as a sovereign country. Now, we (j) ____ our heads high as a model country in the world.