Final answer:
The statement that is NOT true is 'Indo-European languages gained a foothold in Northern Africa by 1000 b.c.e.' as the provided information does not indicate a spread of such languages to Northern Africa by that time. Therefore, the correct option is D.
Step-by-step explanation:
According to the map and provided information, which statement is NOT true? The statement that is NOT true is d. Indo-European languages gained a foothold in Northern Africa by 1000 b.c.e. This assertion is incorrect because the information provided does not indicate that Indo-European languages had spread to Northern Africa by that time. The Indo-European migrations extended as far as Italy and Spain, and by 1000 B.C.E., had spread to areas including the northern borders of the Persian Gulf and the Arabian Sea, but there is no evidence provided that suggests a spread into Northern Africa by the specified time.
The influence of the Indo-European languages and migrations was significant in shaping the linguistic landscape of Europe, Southwest Asia, and the Indus Valley, but it did not reach Northern Africa during the time frame mentioned in the question.