Who is credited with putting the concept of using mass-produced interchangeable parts into practice? dewitt clinton eli whitney cyrus mccormick peter cooper

What are new social classes emerged due to advancement in agriculture ?

What was the purpose of winston churchill’s “blood, toil, tears, and sweat” speech? a. to inform parliament about nazi aggression b. to inspire the british people to keep fighting the nazis c. to update parliament on what he had accomplished so far d. to convince parliament to go to war against nazi germany

Which of these were among you the purpose of the photorealism movement