Explanation:
The United States is known for being very diverse due to the fact that people have emigrated to the US. This is because people want to live the "American Dream" and have a successful career and family. If someone is facing hardships in their home country, they will try to move to the US to start a better life.
The levels of greenhouse gases in the atmosphere have been increasing due to the widespread burning of fossil fuels by the growing human populations.
Mining
The Pacific islands have a great amount of minerals
The Salt Strike was the most aggressive revolt of the Indian National Congress. The correct option among all the options that are given in the question is the first option. This was actually a civil disobedience movement in a non violent matter. This is also an important movement in the history of India.