The thing that happened to the ancient peoples of the Indus Valley is D. They disappeared as though into thin air, and the cause remains unknown.
The Indus Valley was known as the Harappan civilization and it was formed in the Northwestern regions of South Asia. They were known for sculptures, pottery, etc.
The ancient peoples of the Indus Valley disappeared as though into thin air, and the cause remains unknown.
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Saints Cyril and Methodius. The Greek missionaries Saints Cyril (827-869) and Methodius (825-885) were the apostles of the Slavic peoples. Preaching Christianity in the native language, they brought the Slavic countries firmly into the sphere of the Christian Church.
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