Is this a run-on sentence?

in 1227, genghis khan, the mongol leader who conquered much of central asia, died he was buried in an unmarked grave, and its location remains a mystery today.

Which line from beethoven's moonlight sonata is not an example of the author's use of descriptive language to achieve this purpose.

Hich is an example of a compare and contrast text structure? a cinquain poem differs from a diamante poem in the number of lines and the approach to subject matter the first step to writing a cinquain poem is to choose a one-word subject to use as the first line if having trouble writing poetry begin with an easier format such as cinquain or diamante it is best to write a diamante poem for the class project because its format fits the subject matter well

Which major world event was near the birth of the modernist movement