Were the Four Prohibitions given to gentile believers coming into the synagogue found in Acts 15:19-29 based upon the Torah (Law) of Moses?

In Acts 15:19-29, were the Apostles of The Jerusalem Council acting in accordance with the Law of Moses, where each violation of the Torah equated to a "cutting off" of the community? Further, aren't three of the four dietary restrictions? The Four detailed prohibitions (Acts 15:19) are: 1) That they abstain from foods sacrificed to idols (dietary), as described in Leviticus 17:7-9. Note Leviticus specifically addresses the alien (Heb. *Ger*) shall be "cut off". 2) That they abstain from fornication, which is associated with Idolatry. (ref. Leviticus 18:26, 29). Here too both the native and the alien are addressed (vs 26), violations of such equate to a "cutting off" (vs. 29) removal from the Covenant. 3) That they abstain from consuming blood (Dietary, ref. Lev. 17:10-12). Verse 10 specifically states that both Native Israelites and Aliens who consume blood will be "cut off". 4) That they abstain from eating foods strangled. (Dietary, ref. Leviticus 17:12-14) The Torah specifically instructs the community to pour out the blood and cover it with earth which is not done in slaughters performed by strangulation. Note once again that those who do such are "cut off" - ref. vs. 14 Is this practice not associated with the idolatry of the surrounding nations and religion according to Leviticus 18:24-25? If the apostles are not standing upon the authority of the Law of Moses, being led by the Holy Spirit, where did they derive such an arbitrary set of conditions for new believers to enter the synagogue (vs. 21)?