whose assembly line is famous and this is a recreation of his highland park assembly line to walter chrysler and william durant who founded general motors. this big, exciting boom in manufacturing in the automobile industry was huge in the southern part of michigan, particularly southeastern michigan. but at the same time the northern part of michigan was still largely farming as a major industry. but the advances in the technology, particularly the gasoline engine resulted in new technologies like the motorized tractor. other scientific breakthroughs in the study of farming and agriculture really helped usher in a new era of farming in michigan and enabled family farms to grow into sustainable businesses. i think early in the 20th century, almost 25% of michigan farmers were dairy farmers. that was a huge industry for us. so while the factories are booming in southeast michigan, we've got farming on a larger scale happening. so both worlds existing simultaneously. we've now moved in the part of the museum that talks about michigan during world war ii and particularly the war production that

henry ford, who is assembly-line is famous, and this is a recreation of his a summary line, to walter chrysler and william durrant, who founded general motors. this exciting boom in manufacturing in automobiles was huge in the southern part of michigan, particularly southeastern michigan. at the same time, the northern part of michigan was largely farming as a major industry. the advantage -- the advances of technology resulted in new motorizedes like the tractor. other scientific breakthroughs in farming and agriculture helped usher in a new era of farming in michigan and enabled family farms to grow in -- into sustainable businesses. early in the 20th century, 25% of michigan farmers were dairy farmers. while the factories are booming in michigan, we have got farming on a larger scale happening. both worlds exist simultaneously. we have now moved into the part of the museum that talks about michigan during world war ii. particular, the production that took place. 1940, right before the u.s. entered world war ii, our president put a call out. most -- thee the great arsenal of democracy. >> we