What was an obstacle to reducing epidemic diseases in cities?

Question

A.
overcrowded neighborhoods

B.
food shortages

C.
dangerous factory conditions****

D.
the germ theory of disease

If a meatpacking company wanted to practice vertical integration, what would it most likely buy?
A.
shoe stores

B.
gas stations

C.
lumber mills

D.
cattle ranches*****

What technological innovations helped Europeans take over most of Africa?
A.
automobiles and airplanes

B.
spinning jennies and power looms

C.
steamships, telegraphs, and weapons****or

D.
telephones, light bulbs, and electricity****

Answer 1

The first is wrong; the second is right.
The third???

Answer 2

3 is c 2 is d

Answer 3

1 is d

Answer 4

so what is the answer to 1?

Answer 5

I think 1. is A or B, 2. is D, 3. is C.

Answer 6

Most likely, 1. is B.