Citizens in Nations

[Ocroylistan]

I would like to ask a simple question, how do you get more citizens in your nation?

[Comfed]

You wait. Your population increases incrementally every day that your nation is active (i.e. that you've logged in in the past 28 days).

[Life empire]

everyday you gain more population

[Dexterra]

As mentioned, your 'citizenry' or population increases automatically each day while active - but it also builds up according to this scale:

Day 1: start at population: 5 million
Days 2-6: 5 days growth of 1 million: 6, 7, 8, 9, 10,
Days 7-11: 5 days growth of 2 million: 12, 14, 16, 18, 20,
Days 12-15: 4 days growth of 3 million: 23, 26, 29, 32
Days 16-17: 2 days growth at 4 million: 36, 40
Days 18-19: 2 days growth at 5 million: 45, 50
Days 20-21: 2 days growth at 6 million: 56, 62
Days 22-23: random growth of 5, 6, or 7 million per day, with even chance.

Referenced from this

(After days 22-23, it continues at that rate until you cease-to-exist or CTE). Hope that's of some guidance