The most accurate words to fill the spaces would be:
Sugar plantations were the backbone ( source ) of the economy.
In 1890, the US Congress passed the ( McKinley Tariff ), which removed tariffs on all foreign sugar imports.
Hope my answers have come to your help.
<u>The South</u> was most affected by Brown vs. Board of Education.
A military action the added territory in the United States in 1848 was the Treaty of Guadalupe Hidalgo. It ended the Mexican-American war and added the territories California, Arizona, Colorado, New Mexico, Nevada, Utah, and Wyoming.
The railroad made transporting goods across the country faster, easier, and more affordable. They could ship more products on the railway system than they could by wagons. Companies began to grow more quickly after the completion of the railway.
I think it’s d I’m pretty sure it’s d but I may be wrong
