What is significant about Louisiana’s swamps and marshes? Check all that apply. They make up the most fragile and valuable wetlands in the US.

They create a natural barrier around the city of New Orleans.

They cause a decrease in natural habitats for local wildlife.

They are a major cause of subsidence and lead to erosion.

They contribute more than $1 billion a year to the state’s seafood industry.
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"the plan of removing the aboriginal people who yet remain within the settled portions of the united states . . approaches its consummation. . an extensive region . . has been assigned for their permanent residence. it has been divided into districts and allotted among them. many have already removed and others are preparing to go. . " removal of southern indians to indian territory, 1835 this passage is most closely related to a) imperialism. b) the civil war. c) westward expansion. d) the french indian war.