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.
Marxism had found its place in Russian politics because it<span> "appealed to the working class in Russia, as well as the intelligentsia, and their frustration with the elite upper class by promising a fairer system of economics." In addition, Marxism mainly describes class reformations which among its pioneer is Karl Marx. </span>
There are none that have names that start with Y.
The answer to the question is the meso- indians
