What weapons were invented in 1700s?

Catapults were invented in the late 1700's as the army (type people_ used it to catapult each other into the air to try and invade castles and ect. But just kept smashing into the protective wall << not the brightist of people. Sorry but that's all i got -i wasnt around thennn << well duh - god im stuupid. BYE x