Please capitalize where necessary: thus we were once again in a place that was surrounded by water, like our old homeland, aztlán.
A: Thus we were once again in a place that was surrounded by water, like our old homeland, Aztlán.
Q: the sliding control makes it possible to vary the rotational speed.

A: The sliding control makes it possible to vary the rotational speed.
Q: we are to spend money, but with discretion and control.
A: We are to spend money, but with discretion and control.
Problem: homoeopathic remedies should not be taken together with food and drinks or directly before or after teeth brushing.
Can you repeat this sentence, but capitalize it?
Answer: Homoeopathic remedies should not be taken together with food and drinks or directly before or after teeth brushing.
Text: relying on a larger number of diffuse power sources can increase a power system’s resilience against blackouts.

Correct capitalization: Relying on a larger number of diffuse power sources can increase a power system’s resilience against blackouts.
Please capitalize where necessary: use even less power than a cfl and last even longer.
A:
Use even less power than a CFL and last even longer.