What are two reasons the united states cut all trade ties with castro’s cuba in 1961?
castro shared good relations with us cold war rival, the soviet union.
castro declared that he would assassinate us president dwight eisenhower and destroy the us government.
castro brought us-owned industries under government’s control.
castro started manufacturing hydrogen bombs with the of communist china.
castro blocked all trade routes between cuba and united states.

Castro shared good relations with the US Cold War rival, & the society union

Castro also declared that he would assenssinate US president dwight Eisenhower & destroy US Government

Explanation:

Fidel Castro had developed political and military connections with the USSR, to the point that a military base was intended to host nuclear warheads. This event led to the major world crisis were  extinction of mankind was a reality of that time.

The USSR had the Cuban island as an outpost for spreading the communist ideology. Many of the South and Latin American socialists got assistance to their part from Cuba.

An alleged plot against US president Eisenhower was believed to have been orchestrated within the Habana, while publicly Fidel Castro showed a violent Anti-American view on the regional politics and influenced other countries to align south.

Castro was assumed as well to have been survived several murder attempts within the CIA.

Many of these allegations have been reportes in several documentaries and are declassified today.

"they had a large area of land that they owned."