2 and 3. The Louisiana Purchase was conducted in 1803 between the United States and France. Finally, <span>The Treaty of Guadalupe Hidalgo in 1848 ended a dispute between the United States and Mexico, ceding the land of Texas to the United States. </span>
I say true. People would then have to look at the same things over and over agin with nothing new.
Here are some sources of ocean pollution:
<span>Oil. Petroleum products used for fuel are mined from the earth deep below the ocean surfaces.
Dumping.
Sewage.
Air Pollution.
<span>Agricultural Runoff</span></span>