mozilla to enable media source extensions (mse) for all websites in firefox 42

How would the previous sentence be correctly capitalized?
Answer: Mozilla to enable Media Source Extensions (MSE) for all websites in Firefox 42
cartan was teaching at the university of strasbourg when world war ii started :

How would the previous sentence be correctly capitalized?
Answer: Cartan was teaching at the University of Strasbourg when World War II started :
when disraeli died in 1881 he had spent between thirty and forty years warning his countrymen and the world against "the secret societies":

How would the previous sentence be correctly capitalized?
Answer: When Disraeli died in 1881 he had spent between thirty and forty years warning his countrymen and the world against "the secret societies":
how much longer will financial hardships that affect billions of lives last?

How would the previous sentence be correctly capitalized?
Answer: How much longer will financial hardships that affect billions of lives last?