PLEASE HELLP ILL GIVE AND HEART The invention of Cyrus McCormick and John Deere?

A ) Improved Communication
B ) Introduced two new factory labor system
C ) Helped increased agriculture production in the United States
D ) Led to manufacturing breakthroughs in the textile industry

Select the correct answer from the drop-down menu.during the (scientific revolution, renaissance, industrial revolution), european intellectuals rejected many teachings of ancient scientists promoted by the church. to replace flawed theories, scientists began researching and conducting experiments. they used critical and reasonable thinking to draw concrete conclusions. this also led to the (scientific revolution, industrial revolution, enlightenment). it was an age that focused on using reason for understanding laws of nature and identifying humans' natural rights.

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.

Which of the following had the most significant impact in supporting portugal's e fforts to control the indian ocean spice trade