Which made Chinese exploration of the Indian Ocean possible?

Which portuguese explorer discovered brazil

How are the freedom of religion and the freedom of assembly alike? both involve the freedom to express oneself. both were an original part of the constitution. both were practiced by the early puritans. both were denied to immigrants.

Human beings spread all around the world over a period of millions of years. identify when humans arrived in different regions of the world. 200,000 years ago 100,000 years ago 40,000 years ago 30,000 years ago