Deng xiaoping believed that the standard of living in china could be improved by reducing population growth increasing population growth allowing farmers to have large families moving people from the crowded eastern coast

Correct  reducing population growth

Deng Xiaoping rose to power in China in the years following the death of Mao Zedong in 1976.  Mao had opposed the idea of controlling population growth in China, saying, "The more people there are, the stronger we are."  But Deng started a new policy in China in 1979, the "one child policy."  Under the policy, most Chinese families were restricted to having only one child. Incentives for jobs and financial advantage were in place for those who complied with the policy, and sometimes harsh measures such as sterilizations and abortions were implemented during the years that the policy remained in force.

When originally begun by Deng, the one-child policy had the goal of restricting population growth so that it did not go faster than China's  economic development was able to support.

on this day in 1939, in response to hitler’s invasion of poland, britain and france, both allies of the overrun nation declare war on germany.

the first casualty of that declaration was not german—but the british ocean liner athenia, which was sunk by a german u-30 submarine that had assumed the liner was armed and belligerent. there were more than 1,100 passengers on board, 112 of whom lost their lives. of those, 28 were americans, but president roosevelt was unfazed by the tragedy, declaring that no one was to “thoughtlessly or falsely talk of america sending its armies to european fields.” the united states would remain neutral.

as for britain’s response, it was initially no more than the dropping of anti-nazi propaganda leaflets—13 tons of them—over germany. they would begin bombing german ships on september 4, suffering significant losses. they were also working under orders not to harm german civilians. the german military, of course, had no such restrictions. france would begin an offensive against germany’s western border two weeks later. their effort was weakened by a narrow 90-mile window leading to the german front, enclosed by the borders of luxembourg and belgium—both neutral countries. the germans mined the passage, stalling the french offensive.