The answer is not B. hoplites because those are heavy infantry in ancient Greece used but lots of city states not just by Sparta so the correct term is Helots and here is the definition-- a member of a class of serfs in ancient Sparta, intermediate in status between slaves and citizens.
Https://en.m.wikipedia.org/wiki/Japanese_invasion_of_Manchuria
Answer:
His voyage around Africa, Founding and teaching navigation, astronomy and cartography are the correct answers.
Explanation:
Henry the navigator was a Portuguese prince and the third son of King John of Portugal. He was also called Infante Dom Henrique in Portuguese. He wasn't a navigator but got this name because he organized many ocean voyages and started the Age of DIscovery. He opened a navigation school in Portugal for improving the tools and ships and is credited with discovering the first shipping routes directly from Europe to Asia for the Portuguese monarchy. He led crusades against Muslims for getting gold and colonizing the Atlantic islands. From 1419 till his death he made many expeditions along the west coast of Africa for securing trade routes and establish colonies. He played an important role in the development of maps and new ships which were ideal for exploring rough seas.
