What were three goals of creating and hosting the Worlds Fair in Seattle?

The major theme of the fair was to show that the United States was leading  the realms of science and space. The US Government  was really interested in demonstrating the nation's scientific prowess to the world, and so committed over $9 million to the fair, chiefly to build the NASA-themed United States Science Exhibit .

Another theme is to bring order to exposition scheduling and to make clear the rights and responsibilities of the host city and participants.Approximately 10 million people attended this fair and The Century Twenty One made a profit as well.

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battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.