Why might it have been hard for people in the thirteen colonies to join together? select all that apply.

they had different backgrounds.
they worked in many kinds of businesses.
they practiced the same religion.
they owned slaves.
they lived in different colonies.

The answers are,

They had different backgrounds.

They worked in many kinds of businesses.

They lived in different colonies

Explanation:

Not all people.people.to se colonies came from similar ctubal back grounds and most of them were from different European countries with different backgrounds.

Moreover they were separated geographically in vast distances. From one state to another, at that time it easier en difficult to travel.

In addition, the economic background of people in these states were different as well.

porter is writing economic history because he is focusing on the cost of developing vaccines.

i beleive that d is the right answer