Why were all of the tactics necessary for the women's suffrage movement to achieve its goal?

In order to accumulate as much public support possible.

Explanation:

Legislations tend to be changed if the government representatives face enough pressures from the citizens.

Women suffrage activists believed that  that's the the only way for the government to acknowledge their demand to obtain the right to vote.

In order to achieve this goals, they designed several tactics, such as:

- waves of public campaigns.

- Integrating themselves with the labor movements

- Creating a group to help elect different representatives who were willing to support their ideals.

- Various publicity stunts to obtain the attention of the media.

- etc.

i don't get what you mean

explanation:

they could find out our specific needs.