The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
Answer:
Many different types of evidence.
Explanation:
All 3 study material remains and use what they discover to look at past cultures and societies. Archaeologists excavate as well as paleontologists in order to see into the past of those who have lived before us. They find past structures, bones, tools, etc. Sorry I couldn't go more in depth.
<span>Roman-style domes became more widespread.</span>
Answer:
The result of the Iranian Revolution of1979 was the overthrow of the Monarch Mohammad Reza Pahlavi, Grand Ayatollah, Ruhollah Khomeini took over
