2 Verbs to Use for the Word copartnerships

" James W. Marshall, in a letter dated January 28, 1856, and addressed to Charles E. Pickett, gave the following account of the gold discovery: "Toward the end of August, 1847, Captain Sutter and I formed a copartnership to build and run a sawmill upon a site selected by myself (since known as Coloma).

Our Confederacy is perfectly illustrated by the terms and principles governing a common copartnership.

2 Verbs to Use for the Word  copartnerships