Answer:
The coal-fired steam engine was soon developed. It became the key technology of the Industrial Revolution. In preindustrial Europe, water power was widely used as a source of energy. By the late 1700s, however, steam engines had been perfected
Social class division an more complex religious beliefs.
Answer:
The answers are A. He created a ring of ships around Cuba to prevent weapons from leaving or entering the island. And C. He sent a U-2 spy plane over Cuba to tighten surveillance on Soviet-made medium-range missiles.
Explanation:
I think those are the answers! I hope this helps.