Hello, anybody wanna talk?

Which of the following is a compound complex sentence

Which words and phrases connect the ideas in this excerpt from a compare and contrast essay? the team considered using products made by company a and company b. however, the budget and concerns about learning about two products meant that they needed to choose only one. they realized that the product from company a was of excellent quality, to company b's product.

American history (is, are) studying the american colonies.