some were revolutionary were u didn't have cars u had to walk by foot, horse, by boat to have transportation it wasn't easy n they had to do it for miles n miles now we look back as how transportation was even invented but it was now we have millions of ways of transportation ways doesn't matter from planes to technology, etc.
Answer: D. it lies in a valley, surrounded by mountains, that traps in air pollutants over the city.
Explanation: Being in a valley results in air pollution being contained to an area.
Increase in efficiency of farming and also resulting in fewer and also got large farms.
Answer:The presiding officer of the chamber is the Speaker of the House, elected by the Representatives. He or she is third in the line of succession to the Presidency.
Explanation:
