Answer:
Extensive properties, such as mass and volume, depend on the amount of matter that is being measured. ... Both extensive and intensive properties are physical properties, which means they can be measured without changing the substance's chemical identity.
Explanation:
Wealth and power, Loyalty to their leaders , The will to fight to the death, Resistance to European diseases
Answer:
a) protect the newly freed slaves after the Civil War.
Explanation:
The thirteenth, fourteenth and fifteenth amendments of the constitution of the United States came into force immediately after the Civil War to protect the former slaves. Equal protection clause of the fourteenth amendment ensured that the state shall not discriminate any citizens and provide equal protection under law. It simply means that all citizens are equal and therefore subject to equal protection.
I'd say that the answer is observational study because they're just analyzing the data and if it were an experiment they'd be taking data and comparing it.