What piece of technology allowed the Portuguese to set up their trade empire throughout the Indian Ocean region? Advanced metals - such as steel

Guns and gunpowder

The compass

The astrolabe

The compass

Explanation:

A compass can be defined as an electronic or magnetic instrument (device) designed and developed to determine cardinal location and direction from a reference point. It is embedded with the four cardinal points of the Earth; north, west, south and east.

The compass was a piece of technology which allowed the Portuguese to set up their trade empire throughout the Indian Ocean region.

Basically, it was used to find their bearing and direction.

c. it required that townships set aside land for public schools.