Es - why would the slave masters keep slaves ignorant of their own birthdays?
only impertinent people need to know when they are born.
if a slave knew of his birthday, he would demand a paid holiday.
focusing on the birthdays of slaves would call attention to the older
slaves.
keeping personal information secret from slaves meant that they were not
considered human, therefore, more easily controlled.

Keeping personal information secret from slaves meant that they were not

considered human, therefore, more easily controlled.

Explanation:

In the American colonial slavery era,  the constant abuse  and the social status difference between races was easily notable, this kind of actions, like not inform o commemorate a  single day to determined slave, was made basically  to keep the rights, and will of them at a minimum expression.  This means that for the masters was important to remove from the slaves conscience the fact that they can be treated better or recognized by an action, ¨special date¨ or have benefits of a normal human being.

The subordination was a key point for the masters, so having their slaves in a high grade of repression and submission, allowed them to have way more control over the black people.

answer; deviation iq; //(a)

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)