Answer: the answer is D
Explanation: The primary purpose of the Iroquois League was "D. to bring independent nations together for mutual defense and common concerns", since European invaders had begun to seek more territory.
Most landforms change very slowly over many, many years. New mountains have formed as the plates of Earth's crust slowly collided, and others have been worn away by weathering and erosion. ... Floods and landslides can change landforms in a matter of seconds. Volcanic eruptions can also change landforms quickly.
By 1986, shops on Canal Street were closed and windows were boarded up and colorfully painted. Just a decade earlier,
But by the mid-1980s, one in eight workers was unemployed in Louisiana, the highest unemployment rate in the nation. The cruelest impact was on families, as fathers left their children and wives.
One of the biggest hits fell on the small bayou communities that had thrived in the 1970s. In Morgan City, one in four were jobless.
As oil prices dropped – as low as $10 a barrel – some pessimists said Louisiana’s heyday as a prosperous and carefree supplier of energy was over forever. Even if prices rebounded, they said, the Gulf was running out of recoverable oil. But technology proved them wrong, as new deepwater drilling techniques allowed energy companies to find oil and gas in ways that would not have been imaginable just 25 years ago.
The Great Depression, it wasn't that great though.