It became larger under the rule of the Umayyad dynasty.
Science challenged spiritual beliefs because science says we weren't on the earth since it's beginning but spiritual beliefs do.
Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers. By 1933, when the Great Depression reached its lowest point, some 15 million Americans were unemployed and nearly half the country’s banks had failed.
It would be a "nerve cell" that is a specialized cell, since this cell has developed from a general stem cell (which can take practically the form of any cell) as has become a cell with a specific role in the body.