What was life expectancy in US in 1779?

Are Indians always late? When were fingerprints introduced to the US? What is more progressive US or UK? How did the colonization of Americas contribute to slave trade? Who was dred Scott and how did he try to win his freedom? What types of homes did the Susquehannock tribe live in? Who established the rights to the Canadian fur trade? Who helped Abraham Lincoln? What are the countries that the America colony? What was the purpose of the transatlantic slave trade? What was necessary for men to be able to vote in colonial America? What was the movement called when the 4 black students sat down and refused to leave in 1960? What were some obstacles that George Washington Carver had? Why is The Pequot War of 1637 is considered pivotal in Pequot cultural history? What county is Delware Ohio Located at? Where is the mint mark on 1943 mercury dime? What effect did John Brown's raid on Harper's Ferry have on the South? How and why did the practice of slavery begin and grow in Colonial America? What is the birth of freedom Lincoln calls and how does it differ from the nations original birth? Where did the saying Cash is king come from?