Question

$Do the universe's forces merge into one?$
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Answer 1

Answer:

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In general relativity, space and time are merged into one four-dimensional grid, whose properties are uniquely specified (via gravity) by the bodies inhabiting them. Gravity curves the spacetime grid, so general relativity thus describes gravitational interactions as manifestations of the spacetime curvature.

Answer 2

In general relativity, space and time are merged into one four-dimensional grid, whose properties are uniquely specified (via gravity) by the bodies inhabiting them. Gravity curves the spacetime grid, so general relativity thus describes gravitational interactions as manifestations of the spacetime curvature.