Answer:
It was based on an idea that a nation's wealth and power were best served by increasing exports in an effort to collect precious metals like gold and silver
Because it was clear that not all votes were counted for the revote?!.
Polk believed that it was the destiny of the U.S. to expand
entire continent as part of its Manifest Destiny. He believed that the war with
Mexico fitted well with that vision.
When the U.S. won it took over several territories from the Mexicans.
Since 1990 the Japanese economy has slowed down. It is known as the lost decade, or lost Two Decades/ 20 years (initally people hoped it would be over after 10 years), where the GDP and real wages have dropped.