His results gave the first evidence that atoms were made of smaller particles. Specially, he proved the existence of negatively charged sub-atomic particles known as electrons.
Answer:
The main constraints on the pursuit of knowledge are ethical constraints on what may be done to acquire knowledge, particularly if others may be harmed in the process.
B because a flat rate of income tax would hurt the lower class so that doesn’t work. D is incorrect because the progressive movement was against large firms and their corruption. National bank was irrelevant in the 1920s
1:Increasing demands
2:writing Declaration of Independence
3:writting constitution
Native Americans and slaves were not represented in the declaration of independence.