Select the correct answer from each drop-down menu.
What led to health concerns in China?
Blank gave rise to modern cities and job opportunities. People started migrating from rural areas to cities. Overcrowded
cities led to major health concerns, such as the blank
outbreak in 2002.

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.

The answer is installation.