Answer:
Trains, Press, Compass, telegraph, Steam Engine
Explanation:
Trains: Trains were fast and were able to carry a lot of materials from one place to another in a short amount of time to increase productivity and development. On top of that, they were also good for transportation.
Press: The press was essentially a printer back in the mid 1400's. before the press was created, new papers were hand written and only high class noble were able to buy them. After the press was invented, spreading new was easier and cheaper for everyone to buy.
Compass: The compass was a major piece in any exploration. Nearly or all sailors used it to guide them around the ocean so that the sailors don't get lost in the middle of the ocean.
Telegraph: The telegraph was one of the first ways to transmit a message quickly. It was used by parts of the government, banks and news. In warfare, the telegraphs were used to transmit a message between the general and troops to gain an advantage over the enemy.
Steam Engine: The steam engine was one of the first ways to automate things in factories. They allowed machine to do the easier but tedious tasks while the workers did the more advanced tasks. On top of that, without the steam engine, trains and cars wouldn't have existed, so there would've been a major delay in transportation of both people and materials
