Explain how the industry helps develop a country

It's 6 marks so a semi detailed answer would be greatly appreciated :)
I also need it by today :P

Any kind of industry must pay taxes to the government so the revenue raises up. Nation's economy and its growth are purely depends on imports and exports. Economy boosts up with more exports, so reduces inflation and helps in stable economy.

hope this helps <3

doctrine that the us had the right to expand throughout north america.