The two events prompted america to begin developing domestic industries were:
1- Embargo Act of 1807:
This was a law that prohibited the American ships from trading in all foreign ports. This law was passed by the Congress of the US and was signed by President Thomas Jefferson
2- War of 1812:
This was lasted in the duration from 1812 and 1815. It was mainly a conflict between the US, the UK and their respective allies.