During the _ era, Europeans settled on the east coast of North America. Their life was difficult because they _. 1. Civial War 2. were feeling religious persecution

1. colonial 2. lacked survival skills and faced starvation

1. Jacksonian 2. had to fight the British for their freedom

1. revolutionary 2. had difficulty finding precious metals

It would be the 2 option (Colonial, lacked survival skills and faced starvation).
Explanation: During colonial times Europeans colonized The Americas creating colonies (England created colonies on the East Coast in North America), but when they arrived and tried to settle in The Americas they faced difficulties from the difference in environments and lack of supplies and ended up interacting with the Native Americans for help.

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.