The correct answer of the given question above would be the last option. The important difference between the crystals that Becquerel exposed to sunlight and the crystals that he kept in the drawer is that, there <span>was no difference between the crystals because Becquerel used uranium crystals in both instances. He concluded a mineral containing uranium could produce it's image in a photographic plate both without the sunlight and with sunlight. Hope this answer helps.
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Self-determination was point 10 of Wilson's Fourteen Points. Wilson wanted to re-draw the frontiers of eastern Europe so that races ruled themselves. In some ways, self-determination was achieved.
People wanted more luxuries after the crusades was over, since this was a time of great pillaging in the Middle East, although the stated goal was to re-take the Holy Land from the Muslims.
The United States eventually won the war. This showed other countries that even in the worst situations the country could hold it's own.
