7. Complete the Cause-and-Effect chart below from the chart on page Effects Causes P and migration attract investment in railroads. Investors seek by forming trusts in the steel and oil industries. Events The Northern Securities company controls three of the nation's Railways by 1901. Carnegie Steel company produces 45.7% of U.S. steel output by 1900. The Standard Oil Company controls 90 - 95% of U.S. oil production by 1880. The forces the Nor Securities cor in 1904. Conflicts with unions lead strikes. The Court forces Oil to