During the Hellenistic Age, Archimedes made advancements in "mathematics"--specifically in the realm of geometry, since he developed innovative ways to calculate volume, area, etc.
China used the one-child-policy, in which a family can only have one child
however, it has now expanded to a two-child-policy to address the issue of a growing population of males, and a smaller population of females
hope this helps
"<span>b. They said there was no more room in the country to take in more immigrants" was not usually an argument given since the nation was still expanding to some extent, with plenty of room in the midwest and west. </span>
When the prehistoric people trekked into south America toward the end of the ice age,they found a wondrous,lush continent inhabited by all manner of strange creatures like giant ground sloths and car size armadillos.
These hunter gatherers proceeded to behave like invasion species,with their population surging the crashing as they relentlessly depleted natural resources.
Then after that alot more people mustered that area,with crops and animals