Because it had the technology and capacity to do so. They also had a strong demand for coal abroad, thus they had a greater incentive to industrialise. Coal + industrialisation = $$.
Not only this but the evolving industrial sector for weaving, thanks to the spinning Jenny lead to further industrialisation. The mechanisation of farming led to urbanisation as well. Displaced farmers and their families moving to the cities in search of work.
George Washington, 1789-1797
John Adams, 1797-1801
Thomas Jefferson, 1801-1809
James Madison, 1809-1817
James Monroe, 1817-1825
John Quincy Adams, 1825-1829
Andrew Jackson, 1829-1837
Martin Van Buren, 1837-1841
William Henry Harrison, 1841
John Tyler, 1841-1845
James Knox Polk, 1845-1849
Zachary Taylor, 1849-1850
Millard Fillmore, 1850-1853
Franklin Pierce, 1853-1857
James Buchanan, 1857-1861
Abraham Lincoln, 1861-1865
Andrew Johnson, 1865-1869
Ulysses S. Grant, 1869-1877
Rutherford Birchard Hayes, 1877-1881
James Abram Garfield, 1881
Chester Alan Arthur, 1881-1885
Grover Cleveland, 1885-1889
Benjamin Harrison, 1889-1893
Grover Cleveland, 1893-1897
William McKinley, 1897-1901
Theodore Roosevelt, 1901-1909
William Howard Taft, 1909-1913
Woodrow Wilson, 1913-1921
Warren Gamaliel Harding, 1921-1923
Calvin Coolidge, 1923-1929
Herbert Clark Hoover, 1929-1933
Franklin Delano Roosevelt, 1933-1945
Harry S. Truman, 1945-1953
Dwight David Eisenhower, 1953-1961
John Fitzgerald Kennedy, 1961-1963
Lyndon Baines Johnson, 1963-1969
Richard Milhous Nixon, 1969-1974
Gerald Rudolph Ford, 1974-1977
James Earl Carter, Jr., 1977-1981
Ronald Wilson Reagan, 1981-1989
George Herbert Walker Bush, 1989-1993
William Jefferson Clinton, 1993-2001
George Walker Bush, 2001-2009
Barack Hussein Obama, 2009-2016
Trump, 2017
It contributed greatly as many African Americans were looking for jobs and during the Great War 1914-1918 many African Americans worked in the factories creating ammo,weapons, armour etc, Many also fought in the war.