Durante este período de tiempo, ciertos estadounidenses temían que los inmigrantes le quitaran trabajos a los estadounidenses reales.

Okay since this person's question is in Spanish, I am going to say this in two languages, so no one is mad. I do not understand how that is a question, I will edit my answer later. Comment on my question, then I will better. (IN SPANISH VERSION I AM SORRY IF MY SPANISH IS BAD.)

Bien, ya que la pregunta de esta persona está en español, voy a decir esto en dos idiomas, así que nadie está enojado. No entiendo cómo es una pregunta, editaré mi respuesta más tarde. Comenta mi pregunta, entonces lo haré mejor. (EN VERSIÓN EN ESPAÑOL LO SIENTO SI MI ESPAÑOL ES MALO.)

Hola, lo siento, vas a traducir esto porque sí, accidentalmente dije 'cómo es esta pregunta' en español.

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho

if i am correct the answer is going to be a) the federal program of reconstruction ended.