प्राचीन इंका सभ्यता मुख्य रूप से निम्नलिखित में से किस आधुनिक देश में स्थित थी?

What was the primary purpose of the civil service exams utilized in the earliest forms of testing that originated in ancient China around 2200 B.C.?

Which of the following civilizations is widely regarded as the oldest civilization in the world?