In which era did life first appear?

I believe it is paleozoic but I've also heard its precambrian

What is the difference between checks and balances and separation of powers in a pharagraph

Which of the following statements cannot be applied to the role Thomas Jefferson played as the President of the United States? A. He sought to maintain a simple role as president to reflect his idea of being of the common man in the nation B.

Why did Andrew Jackson stand up for the low and middle class

Why did abolitionists use antislavery literature to promote their cause, and what effect did it have in the slavery debate?

Which of the following does not describe factory work and life in the late 1800s? Most workers had an eight-hour workday. Working conditions were unhealthy and dangerous. Women and children were compelled to work.

Where did the south suffered a crushing defeat that ended its hopes for victory?

In the early colonial period, which of the following was the cash crop of virginia

Which European city was covered in ash by a volcano which erupted in 79 CE.

When did nomadic pastoralism first develop in central asia? a. 9,000 years ago b. 1206 - 1277 ce c. 550 bce d. 1271 - 1295 ce

What materials had to be made after WW2