Unknown. Estimates for Roman Britain range up to 5 million, though I'm highly sceptical of anything over 1-2m, probably around 1m this early in the Empire.
The terrain, the amount of rainfall, and the quality of the soil affected the population density in Western Europe around 1000 AD.
The world population in 1000 A.D. was 257,053,896 The world population in 1000 B.C. was 36,459,534
1000
The largest city in the west around 1000 AD, with an estimated population of 450,000, was Córdoba, located in present-day Spain. At that time, Córdoba was a major cultural, economic, and political center of the Islamic world, known for its advanced architecture, libraries, and schools. Its population and prominence were a result of the flourishing Moorish civilization in the Iberian Peninsula.
1000 to 1300 AD can be written as: M - MCCC AD.
Factors that affected population density in Western Europe around 1000 AD included agricultural advancements like the three-field system, which increased food production. Additionally, technological improvements in plows and mills helped increase efficiency. Political stability and urbanization also played a role in shaping population density during this time.
1000 AD
To calculate the difference between 1000 BC and 2010 AD, you add the two years together since there is no year zero in the transition from BC to AD. This results in a difference of 3010 years (1000 years from 1000 BC to 1 AD, plus 2010 years from 1 AD to 2010 AD). Thus, there are 3010 years between 1000 BC and 2010 AD.
Let us put reasonable bounds on the value of the world's population in AD 1. For the sake of example, I'll choose a lower bound of 50,000,000 (8 significant figures specified), and an upper bound of 200,000,000 (9 sig. figs. specified). Similarly, I'll put bounds on the population in AD 1000 at 250,000,000 and 350,000,000 (both exact). Note that the world's population must be an integer greater than or equal to 0; therefore, these values are exact -- there can be no loss of precision in the calculation due to these numbers. Using x = 2 (exact) and a generation length of (exactly) 40 years, we generate the following table : Population -------------------------------------------------- AD 1 | AD 1000 | C (rounded for convenience) -------------------------------------------------- 50 mil | 250 mil | 1.0665 200 mil | 250 mil | 1.00897 (min) 50 mil | 350 mil | 1.0809 (max) 200 mil | 350 mil | 1.02264 P(n) is a monotonically increasing function of c for the values of x and n chosen. Therefore, if the actual populations in AD 1 and AD 1000 lie within the given bounds, then c must lie within the interval [1.00897, 1.0809].
The population of Ad-Duwwara is 1,685.
The population of Arsenal AD is 7,000.
The population of Arsenal AD is 2,010.