Answer: I think its D) Popular Sovereignty
Explanation:
Wood from tree and arrowheads from rock
The need for cheap farm labor in the South of the US led the US to join the slave trade. It's pretty much the same story for everyone else. People just wanted cheap labor.
Answer:
1. Carbon-14 breaks down into nitrogen-14
2. I think it is the first one but I am not completely sure
3. nucleons
4. Strong Nuclear force
Tropical Storm Katrina, and it made landfall between Miami and Fort Lauderdale, Florida, as a category 1 hurricane (a storm that, on the Saffir-Simpson scale, exhibits winds in the range of 74–95 miles per hour [119–154 km per hour]). Sustained winds of 70 miles per hour (115 km per hour) lashed the Florida peninsula, and rainfall totals of 5 inches (13 cm) were reported in some areas. The storm spent less than eight hours over land. It quickly intensified when it reached the warm waters of the Gulf of Mexico.
This should answer you're question