This is the term researchers use to "measure" happiness:

Subjective well-being

Explanation:

When researchers measure "happiness," they often label this term as "subjective well-being." Well-being refers to how satisfied you are with your own life, your moods and your emotions. Because this is a self-evaluation, the measure is considered "subjective." This concept is usually used in conjunction with two high-quality measures: the Satisfaction With Life Scale (SWLS) and the Positive and Negative Affect Schedule (PANAS).

swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.