Could someone me with an english question? !

(third paragraph)
the secular cooling that must someday overtake our planet has already gone far indeed with our neighbour. its physical condition is still largely a mystery, but we know now that even in its equatorial region the midday temperature barely approaches that of our coldest winter. its air is much more attenuated than ours, its oceans have shrunk until they cover but a third of its surface, and as its slow seasons change huge snowcaps gather and melt about either pole and periodically inundate its temperate zones. that last stage of exhaustion, which to us is still incredibly remote, has become a present-day problem for the inhabitants of mars. the immediate pressure of necessity has brightened their intellects, enlarged their powers, and hardened their hearts. and looking across space with instruments, and intelligences such as we have scarcely dreamed of, they see, at its nearest distance only 35,000,000 of miles sunward of them, a morning star of hope, our own warmer planet, green with vegetation and grey with water, with a cloudy atmosphere eloquent of fertility, with glimpses through its drifting cloud wisps of broad stretches of populous country and narrow, navy-crowded seas.

which of the following states the central idea of the third paragraph?

inhabitants of mars were blessed with an ever-increasing intelligence.
melting snowcaps caused the inhabitants of mars to prey upon the humans of earth.
the distance between mars and earth was not enough to deter invasion.
inhabitants of mars looked toward earth for various reasons, some rather obvious.

i think it's b, but i'm not 100% sure > .

For in this unit, you read about transitions of power and the formation of newly independent nations in africa, asia, the americas, and the middle east. some of these transitions were peaceful, while others caused long-term instability. why do you think some countries were more successful than others with political transitions? what do you think were the biggest challenges facing newly independent countries? would it have been possible for leaders to prevent these problems before they happened? why or why not?

Plz me asap. upon arrival of european powers on american soil, a quick end came to many native populations. numbers were devastated the longer europeans were present. many empires such as the aztec and inca were taken by force. the natives’ weapons of arrows and rocks were no match for gunpowder, steel swords, and horses. yet even after hostile takeovers, the native americans continued to suffer in numerous ways. according to las casas, the harshness of the encomienda system took many native lives. examples of such harshness included beatings by colonists and exhaustion caused by never-ending labor. natives were forced into slave labor in order to process colonists’ crops such as sugar cane and tobacco. these crops were referred to as “cash crops”. cash crops are crops grown not for sustenance but because they are extremely profitable. the colonies would have natives tend to these crops and they would then be exported to other european nations for high prices in order to make manufactured or processed goods. native slaves were worked for long hours in extremely hot temperatures with very little food, water, or breaks. they suffered savage beatings for working too slow and some were killed for refusal to work due to their exhaustion. poor health is another struggle natives faced upon european colonization. many natives died from hunger once colonists started to take their land. colonists’ cattle trampled native crops such as corn and squash. but possibly the most devastating factor in declining native populations were the diseases brought by europeans and against which the native people had no immunity. these included smallpox, typhus, chicken pox, mumps, and measles. hundreds upon thousands of natives fell to such diseases. entire villages were wiped out in mere days of the first symptom. native cities throughout the americas became desolate from the fast spread of disease. native american empires such as the aztec and the inca fell to the spanish and portuguese in the 1500s. the aztec alone had between sixteen and eighteen million people under their rule before europeans landed on the continent. why were these empires unable to fight the inevitable take over of european powers? use evidence from the text to support your answer.

About the story anne franks what reminder of the war outside keeps the residents up at night? a. ambulances b. soldiers laughing c. bombings