question: there is no greater power in the world today than that wielded by the manipulators of public opinion in america.
Capitalize this past sentence correctly.
A: There is no greater power in the world today than that wielded by the manipulators of public opinion in America.

question: to begin your free file analysis, simply drag-and-drop your catshape file inside the dotted lines below, or click "browse my computer" and select your file.
Capitalize this past sentence correctly.
A: To begin your free file analysis, simply drag-and-drop your CATSHAPE file inside the dotted lines below, or click "Browse My Computer" and select your file.

question: in connection with the assignment for the photo workshop imaginary houses the two photo assistants built an extension to the pardo house and created a low bar.
Capitalize this past sentence correctly.
A: In connection with the assignment for the photo workshop Imaginary Houses the two photo assistants built an extension to the Pardo House and created a low bar.