What was the main reason that the united states intervene in cuban affairs in the early 1900s?

The history of immigration and emigration in the United States is closely linked to the history of railroads. Immigrants were not only integral to the construction of the transcontinental railroads that facilitated western expansion, but they also used the railroad to migrate west and to form new immigrant settlements in western states and territories.

porter is writing economic history because he is focusing on the cost of developing vaccines.

yes

explanation:

the fighting words doctrine, in united states constitutional law, is a limitation to freedom of speech as protected by the first amendment to the united states constitution. in 1942, the u.s. supreme court established the doctrine by a 9–0 decision in chaplinsky v. new hampshire.