Technology has improved city life in more ways that can be told easily, the developments of phones,electricity and even sewage systems helped make the cities safer and more effective
The answer is A they <span>perform scientific experiments to test it.</span>
Steel: 4. provided a tough, efficient building material for industrial purposes
Eli Whitney: 2. developed system of interchangeable parts; increased population
Assembly Line: 3. made putting together of goods piece by piece; increased production greatly
Steam Power: 1. enabled building of factory away from rivers; powered machines
Answer:
The hills provided a safe place for the Americans to gather to plan rebellion.
Explanation:
The most important thing about the mantaining the control of the hills is the fact that you can see and oberve everything around and hold positions, they didn´t have the opportunity nor the arms to attack the british troops in the harbor, but at that time it provided a great and safe place for the Americans to gather to plan rebellion.