Text: the changes in the economic foundation lead sooner or later to the transformation of the whole immense superstructure.

Correct capitalization: The changes in the economic foundation lead sooner or later to the transformation of the whole immense superstructure.

Text: it is strongly advised that before embarking on any form of training in crystal gazing, you enquire most thoroughly into your secret motives.

Correct capitalization: It is strongly advised that before embarking on any form of training in crystal gazing, you enquire most thoroughly into your secret motives.

Text: however, there are cases where you might lose your important information stored on toshiba hard drives because of formatting.

Correct capitalization: However, there are cases where you might lose your important information stored on Toshiba hard drives because of formatting.

Text: palestinians and israelis are actors and the media the stage.

Correct capitalization:
Palestinians and Israelis are actors and the media the stage.