Colombia- Juan Manuel Santos
Mexico- <span>Enrique Peña Nieto</span>
Costa Rica- Luis Guillermo Solís
El Salvador- Salvador Sánchez Cerén
Answer: deoxyribonucleic acid
Explanation:
The railroads help transfer people and goods across the United States lot faster than on horse. Also helped with mailing.
Answer: straw polls
Explanation:
A straw poll an unofficial vote that shows how the public thinks about a specific subject or their vote intentions in an election.
Literary Digest took a presidential election straw poll for years, and for years it accurately predicted the winner. It was only in 1936 that the poll predicted, mistakenly, the Republican candidate as the winner, and Literary Digest lost its credibility.