What was the effect of the jetties along the Port of New Orleans during the late 1800s? They were able to successfully regulate water levels and prevented flooding during major storms.
They allowed ships to pass through the port and shipping traffic dramatically increased.
They made little difference as the shipping industry struggled to compete with the railroads.
They were found to be too shallow and failed to increase shipping and trade in the port.

They were able to successfully regulate water levels and prevented flooding during major storms.

Explanation:

the answer is migration

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.