When considering human history we see that growth in real per capita gdp generally did not occur before the beginning of the 19th century

When considering human history we see that "long-run sustainable"
growth in real per capital GDP generally did not occur before the beginning of the 19th century "but now exists in many countries around the world".

Economic growth or Financial development is commonly estimated as the change in per-capita Gross Domestic product (GDP). Supported long term financial development at a positive rate is a genuinely later phenomenon in mankind's history, a large portion of it having happened over the most recent 200 years.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

Attracts next to next and of the phosolipid that attracts water repels next to the end that repels water