The Rise of Napoleon, and the creation of the second French Republic
A). They wanted to promote goodwill.
When Russia entered WW1, they had mobilized about 1.5 million soldiers. At most, the Russians had 5 million soldiers fighting. They couldn't arm all of these soldiers though, because they only had about 4.6 million weapons.
The USS Maine sunk the USS Maine.
Modern analysis has evolved and now pinpoints an internal coal bunker fire as being the likely cause of the explosion that took down the USS Maine.
This is a dramatic discovery as the sinking of the USS Maine was blamed on the Spanish mines in the harbor.
It makes foreign goods more expensive.
That allows domestic industry the luxury of charging more for their goods because now foreign goods are more expensive.