The plan fell through for the want of support.

Fall through: to not be completed, or not happen
Another example:

Our plans fell through because of lack of money.

See more phrasal verbs in the same source: Oxford Advanced Learner's Dictionary.

The plan fell through for the want of support.

Fall through: to not be completed, or not happen
Example:

Our plans fell through because of lack of money.

See more phrasal verbs on the same source: Oxford Advanced Learner's Dictionary.

The plan fell through for the want of support.

See more phrasal verbs in Oxford Advanced Learner's Dictionary.

The plan fell through for the want of support.

Fall through: to not be completed, or not happen
Another example:

Our plans fell through because of lack of money.

See more phrasal verbs in the same source: Oxford Advanced Learner's Dictionary.