Why was the war 1812 has been described by some historians "second war of independence

The War of 1812 or Revolutionary War is called Second War of Independence.

The Americans fought for their rights to neutral trade, which  British government suspended because of the continental system.

The fought ended with the Treaty of Paris, but for some historians it was a treaty weak. Because it did not guarantee the survival to the new country, nor rights to trade.  It would not be too long before the British challenged them again.

by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.

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what are local authorities doing to fix the problem