According to project announcements, the world s longest expressway was proposed to come up entirely within which Indian state, connecting its western and eastern regions?

Introduction / Context:
India has undertaken several ambitious expressway projects to improve connectivity and support economic development. One high profile announcement spoke about an expressway that, when completed, would be among the longest in the world and would run entirely within a single Indian state from its western side to its eastern side. Competitive exams pick up such statements and ask which state is associated with this plan. This question links large scale infrastructure projects with the political geography of Indian states.

Given Data / Assumptions:

- The question refers to a very long expressway proposed as one of the longest in the world. - The expressway is planned entirely within one Indian state. - It is meant to connect the western and eastern parts of that state. - The options are Gujarat, Uttar Pradesh, Himachal Pradesh and Karnataka.

Concept / Approach:
Uttar Pradesh has planned major expressways such as the Yamuna Expressway, Agra Lucknow Expressway, Purvanchal Expressway and Ganga Expressway to link different regions of the state. Projections and political announcements about the Ganga Expressway in particular described it as potentially one of the longest expressways in the world running completely within a single state. The approach is to recall that this narrative is closely associated with Uttar Pradesh, rather than with Gujarat, Himachal Pradesh or Karnataka, whose expressways are important but do not match this specific claim in exam oriented materials.

Step-by-Step Solution:

Verification / Alternative check:
Verification can be done by reviewing infrastructure and economy sections of current affairs digests, which often highlight Uttar Pradesh s expressway building programme. These digests mention plans for a very long Ganga Expressway project and describe it in superlative terms. Similar phrasing is rarely attached to expressway projects in the other states listed in the options, so the exam expectation is that Uttar Pradesh is the correct choice.

Why Other Options Are Wrong:
Gujarat has coastal highways and industrial corridors, but these are not commonly promoted in exam notes as the world s longest expressway within a single state. Himachal Pradesh is a mountainous state where expressways are shorter and more constrained by terrain. Karnataka has important roads and proposed corridors, but its expressways have not been framed with this particular superlative in the same way. None of the above is incorrect because Uttar Pradesh is the state directly connected with the project description used in the question.

Common Pitfalls:
Students may guess Gujarat or Karnataka because they associate these states with rapid economic development and modern roads. Others may be wary of political exaggeration and doubt any claim of world s longest, leading them to overthink the question. The best approach is to remember the specific link made in exam oriented current affairs between Uttar Pradesh, its Ganga Expressway and the description of it as one of the longest expressways in the world inside a single state.

Final Answer:
The state in which the proposed world s longest expressway was to come up entirely within its borders is Uttar Pradesh.