Explain why there was a disputed succession to the English throne when William I
died?

After William I died there was a disputed succession because his eldest son Robert and him didn´t get along well, as Robert with the help of Bishop Odo started a failed revolution against William I. This meant William couldn´t trust Robert with England as he could go power crazy.

Explanation:

the protestant reformation's started in 1517, disturbing the religious and political order in europe´s catholic countries. the outcome was the european wars of religion prosecuted in europe in the 16th, 17th and part of the 18th century. nonetheless, uprisings, territorial disputes, and great power conflicts were also causes of the wars.  

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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