question: the many houses, domes, towers, spires and factory chimneys symbolise the many divine technical assets that modern materialistic science has given people. we will return to those later.
Capitalize this past sentence correctly.
A: The many houses, domes, towers, spires and factory chimneys symbolise the many divine technical assets that modern materialistic science has given people. We will return to those later.

question: even that spectacular maneuvers and tricks are possible, caused a big popularity.
Capitalize this past sentence correctly.
A: Even that spectacular maneuvers and tricks are possible, caused a big popularity.

question: the rotational speed of the blade up to 3600 rpm. / min
Capitalize this past sentence correctly.
A: The rotational speed of the blade up to 3600 rpm. / Min