The term "colonial population" can refer to the population of colonists in a specific colony or the overall population of colonies during a particular period. As there were numerous colonies established by different European powers at various times, the biggest increase in colonial population would vary depending on the specific region or colony under consideration.
For example, in the context of the United States, the biggest increase in colonial population occurred during the 18th century, particularly from the early 1700s to the mid-1700s. This period is often referred to as the "Great Awakening," and it was marked by significant population growth due to natural population increase and large-scale immigration from Europe.
However, if we consider other colonial regions, such as Latin America or Africa, the biggest population increases might have occurred during different time frames, depending on the colonization history and events specific to those regions.
It's important to specify which colonial region or colony you are referring to in order to determine the exact period of the biggest increase in the colonial population.
I hope this helped!
~~~Harsha~~~