How did braceros the war effort? they produce new varieties of vegetables. they produce more automobiles. they introduce irrigation for agriculture. they meet labor shortages for industry.

The so-called "Bracero Program," which was inaugurated in 1942, helped meet wartime labor shortages for industry (specifically for agriculture). Furthermore, it was believed that this agreement would be a way for Mexico to be involved in the Allied armed forces - those that were fighting against the Axis powers (Germany, Japan and Italy) during Second World War.

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation:

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.