You could find it on the internet
Lapita culture or the prehistoric Pacific ocean people have developed skills in building crafts to sail the seas.
Their greatest obstacle are the miles of water separating islands. In order to reach different land masses, they have develop skills to sail and navigate the seas.
Telescope
Thermometer
Air pump
submarine
The Arab empire converted and unified pagan societies to Islam
Explanation:
it is isperatinal and headwarming
