The Supreme Court here in Roe v. Wade used the compelling interest test.
To put it simply the compelling interest test is used by the court, federal or state, to check the if the law is constitutionally valid. In the Roe v. Wade case the Supreme Court had to see if the right to privacy of the 14th Amendment is applied to abortion and they decided it did. They used the compelling interest test to balance this with the state's interest in the welfare of women and the potential human life that is the baby. So the court limited state's regulations on abortion.
Answer:
"by seeking international protection for endangered species"
Explanation:
The best option will be the C. Railroads made the rapid movement of produce and goods into many markets possible.
Because Railroads basically were the key point to national business and economic growth. Eliminating the needs for long and weary trips, while also founding and fueling other soon-to-be huge business industries, such as iron, coal, copper, machinery, etc., railroads made "rapid movement of produce and goods into many markets possible."