Settlers were given land and in return were expected to farm and build on it
The main way in which Theodore Roosevelt’s Corollary influenced US foreign policy was that it cast the US in a far more dominant light, since it threatened the use of force against countries that didn't "fall in line".
It strengthened Fidel Castro's position. The bay of pigs was a failed attempt to remove him from power. When it failed the U.S was exposed as trying to start a revolution with one of their "allies". This really hurt the U.S in the future because it led other countries not to trust them.
Answer:
The plague had an important effect on the relationship between the lords who owned much of the land in Europe and the peasants who worked for the lords.