question: the theory of the "long waves" was a godsend in this connection, since it could not be foreseen whether an end or a beginning of one of these waves had been reached.
Capitalize this past sentence correctly.
A: The theory of the "long waves" was a godsend in this connection, since it could not be foreseen whether an end or a beginning of one of these waves had been reached.

question: at least with regard to the hours of work one may write upon the portals of these factories: lasciate ogni autonomia, voi che entrate!
Capitalize this past sentence correctly.
A: At least with regard to the hours of work one may write upon the portals of these factories: Lasciate ogni autonomia, voi che entrate!

question: both conditions had to exist in order for a region to develop a cattle ranching industry.
Capitalize this past sentence correctly.
A: Both conditions had to exist in order for a region to develop a cattle ranching industry.