The counties remaining Democratic tend to be all of the following except A.
Border counties

B.
Suburban

C.
Hispanic counties

D.
Heavy concentration of petrochemical industry

B.  Suburban

Explanation:

I'm supposing the question refers to the state of Texas.

Suburban counties in Texas tend to be almost split in half between republicans and democrats, but in some cities like Fort Worth, suburban counties lean more republican, and in others like Austin, they lean more democratic.

Exurban and rural counties are overwhelmingly republican, while urban, industrial, hispanic, and border counties are overwhelmingly democrat.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

question 1: a) thurgood marshall

question 2: b) the civil rights act of 1964

question 3: c) brown v board of education

question 4: d) creation of the dept of education

question 5: a) welfare and social security

explanation: