The number of elected officials who are african americans a) has risen dramatically at all levels of government b) has grown at local and state levels, but not federal c) has been shrinking since 1990 d) grew after 1964 until about 1990 and then leveled off

The number of elected officials who are African Americans  a) has risen dramatically at all levels of government

Explanation:

It is seen that since 1964, the rise of the African Americans was started at that time and it is rising positively from that very time and it is seen in the last one or two decade that a number of elected officials has dramatically risen at all levels of government. For example, The number of Black representatives in Congress at present is 52 which is the highest for all time in America. The inception of Barak Omaba was seen as a representation of the rise of the African American aspirations.

there's multiple reasons why the conquistadors were so successful in colonizing central america, and some of them are:

- they were seen as gods;

at the beginning, the spanish settlers were seen by the natives as gods, and this was mainly due to their white skin, and the way they came with their boats.

- possessed superior weaponry;

the spanish had gunpowder and guns, as well as cannons, while the natives did not had any fire weapons.

- made cleaver alliances;

they used the situation of tribes hating each other, so they made alliances with some of them which served them very well.

- brought diseases;

the native people were not immune to certain diseases the europeans brought with them, so they were dying from seeming harmless things for european standards.