Which is the best definition of naturalization?
the process of living and working in the u. s. in order to become a citizen
the act of taking an oath of loyalty to the u. s. in order to become a citizen
the legal steps taken for a citizen born in another country to become a u. s. citizen
the classification of one who is born in another country but lives in the u. s. permanently

Naturalizacion is the process of legal steps taken for a citizen born in another country to become a U.S. citizen .

Explanation:

Naturalization is the process by which the citizen of a country acquires the nationality of the United States, with which he has acquired some links as a result of the stay and the residence maintained over time in a legal manner in America, or by other reasons - such as marriage with an American or the direct descent of American parents, grandparents, etc - .

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.

b.

jim crow laws were enacted in northern states.