They used sonar to detect german submarines. sonar reflects of underwater sound waves
The correct answer for the question that is being presented above is this one: "the Panama Canal." As a result of riots and a new treaty, Panama was given full control of the Panama Canal. The Panama Canal <span>is a 48-mile ship canal in Panama that connects the Atlantic Ocean to the Pacific Ocean</span>
The answer is: Water Scarcity
The new Mexico region has a low level of humidity and a really high temperature.
This condition makes it almost impossible for that region to form a sustainable water source because most of the liquid in this region will evaporate really quickly.
<span>The correct answer should be that the United States forced its colnial rulers to leave. The declaration of independence was actually made even before the Fall of the Bastille which makes the US the first Republic in the world. It, together with France, inspired many others to get rid of monarchies, France mostly to those original countries while the US inspired other colonies.</span>