Which of the following best describes the change in the Native American population from 1500 to 1900?

the European population nearly doubled, the Native American population dropped greatly, and millions of Africans were sent to the Americas as slaves; this best describes the changes brought to world populations as a result of the European colonization of the Americas.  

Explanation:

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

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                                                    -wolfiewolffromsketch