The answer is D hope i helped
1.is a
2.is b
3.is c
4. is b
My program of perestroika means restructuring. I will give the government an overhaul and focus on giving the Soviet people more economic freedom. That means businesses will be able to grow. My other program, glasnost, will focus on openness. Through this program, citizens will be able to access Western ideas and products, and they will be able to speak and write more freely.
Railroads made transportation easier and clipper ships are merchant ships which allowed trade between countries in a smooth manner.
Explanation:
Invention of huge railroads made america to tread inn the path of economic development. It changed the way humans travel and work. It enabled easier transportation of raw materials and finished goods. It allowed the rise of many towns and cities along the trail of railroads.
Clipper ships are the new invention wherein it clips to the water and it moves in a great pace. These are sailing vessels. the first clippers emerged inn American and British yards. Baltimore clippers were famous during war and it was used to carry huge supply of arms and ammunition during the war time.