question: the prague spring and the subsequent soviet invasion of czechoslovakia led to another soviet-mandated purge of questionable elements in the bulgarian communist party.
Capitalize this past sentence correctly.
A: The Prague Spring and the subsequent Soviet invasion of Czechoslovakia led to another Soviet-mandated purge of questionable elements in the Bulgarian Communist Party.

question: our second grandchild, her husband and our great-granddaughter spent christmas eve at the man's parents.
Capitalize this past sentence correctly.
A: Our second grandchild, her husband and our great-granddaughter spent Christmas eve at the man's parents.

question: all in all, mobile binary options are the perfect compliment to your trading style, providing instant information on a convenient platform to make the best trades.
Capitalize this past sentence correctly.
A: All in all, mobile binary options are the perfect compliment to your trading style, providing instant information on a convenient platform to make the best trades.