When the Republican Party formed in the 1850s, its support for free labor meant that

people worked for free.
white men did not have to compete for jobs.
slavery spread in the South.
people were hired without restrictions.

white men did not have to compete for jobs.

Explanation:

The republican still hasn't supported establishment of slavery until Abraham Lincoln took the presidency in 1861.

At that time, this concept free labor refers to the use of Slaves to work in plantation for free. This ideology was developed at the same time when the influx of immigrants arrived in united states.

Many plantation owners at that time treated these immigrants similarly as slaves. Basically all of the jobs that are dangerous, tiring, and dirty were being done by either slaves or immigrants.  This created a situation where white men did not have to compete for jobs, especially high paying ones.

It meant that white men did not have to compete for jobs.

Explanation: In the 1850s, the Republican Party formed and they supported free labor so white men did not have to compete for jobs.

letter a is the answer

soviet influence spread across eastern europe sharply during and after wwii. the soviet armies liberated the countries in eastern europe and occupied them from the germans as they were forced to retreat towards germany.