Only partially. As a prime contractor you generally cannot subcontract more than 50% of a project — your company must perform at least half the work itself. Exceptions with higher percentages can exist with justification, but winning contracts purely to flip them to subcontractors is not allowed and will not fly: the government awards to a prime it expects to actually perform, and your company remains the legally responsible party if a subcontractor delivers badly.
Using subcontractors for part of a large job, including partners in other territories, is perfectly legitimate within that limit.
Subcontracting also works in your favor as an entry path. Starting as a subcontractor under an established prime lets you build past performance and get into the system before competing as a prime yourself — and primes on many government contracts are required to subcontract portions of the work. The program's system surfaces active awarded contracts so you can approach the prime about specific line items that match your service, and helps members register as subcontractors with large primes. Your roadmap call determines whether the prime or subcontractor path fits your situation first.