People went exploring because of what laws?
primogeniture

`name`: Device that helps sailors go in correct direction, invented in `place`
name: Magnetic Compass
place: China

`person` helped Europeans know depth of tide due to advances in `field`
person: Newton
field: gravity

`name`: Steering mechanims, invented in `place`
name: Rudder
place: China

`name`: Device that tells distance from equator (improved by `group`)
name: Astrolabe
group: Islam

`name`: Device that allows turning against the wind, from `group`
name: Lateen sail
group: Islam

Field that improved, allowing sailors to figure out where they were better
Cartography

`name`: Thing that helped Europeans conquered, invented in `place`
name: Gunpowder
place: China

`name`: Light type of boat invented by `place`
name: caravel
place: Portugal